Abstract

We report a high power and high energy all-fiber-based single frequency nanosecond pulsed laser source at ~1918.4 nm in master oscillator-power amplifier (MOPA) configuration. The pre-shaped pulsed fiber laser seed with a variable pulse duration and repetition rate were achieved by directly modulating a continuous wave (CW) single frequency fiber laser using a fast electro-optical modulator (EOM) driven by a arbitrary waveform generator (AWG). One piece of single mode, large (30 μm) core, polarization-maintaining (PM) highly thulium-doped (Tm-doped) germanate glass fiber (LC-TGF) was used to boost the pulse power and pulse energy of these modulated pulses in the final power amplifier. To the best of our knowledge, the highest average power 16 W for single frequency transform-limited ~2.0 ns pulses at 500 kHz was achieved, and the highest peak power 78.1 kW was achieved at 100 kHz. Furthermore, mJ pulse energy was achieved for ~15 ns pulses at 1 kHz repetition rate. Theoretical modeling of the large-core highly Tm-doped germanate glass double-cladding fiber amplifier (LC-TG-DC-FA) is also present for 2 μm nanosecond pulse amplification. A good agreement between the theoretical and experimental results was achieved. The model was also utilized to investigate the dependence of the stored energy in the LC-TGF on the pump power, seed energy and repetition rate, which can be used to design and optimize the LC-TG-DC-FA to achieve higher pulse energy.

© 2012 OSA

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References

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  1. http://npphotonics.com/includes/main.php?pid=49 .
  2. J. Geng, J. Wu, S. Jiang, and J. Yu, “Efficient operation of diode-pumped single-frequency thulium-doped fiber lasers near 2 microm,” Opt. Lett. 32(4), 355–357 (2007).
    [CrossRef] [PubMed]
  3. J. Wu, Z. Yao, J. Zong, A. Chavez-Pirson, N. Peyghambarian, and J. Yu, “Single frequency fiber laser at 2.05 µm based on Ho-doped germanate glass fiber,” Proc. SPIE 7195, 71951K, 71951K-7 (2009).
    [CrossRef]
  4. M. Leigh, W. Shi, J. Zong, J. Wang, S. Jiang, and N. Peyghambarian, “Compact, single-frequency all-fiber Q-switched laser at 1 microm,” Opt. Lett. 32(8), 897–899 (2007).
    [CrossRef] [PubMed]
  5. W. Shi, M. Leigh, J. Zong, and S. Jiang, “Single-frequency terahertz source pumped by Q-switched fiber lasers based on difference-frequency generation in GaSe crystal,” Opt. Lett. 32(8), 949–951 (2007).
    [CrossRef] [PubMed]
  6. K. T. Vu, A. Malinowski, D. J. Richardson, F. Ghiringhelli, L. M. Hickey, and M. N. Zervas, “Adaptive pulse shape control in a diode-seeded nanosecond fiber MOPA system,” Opt. Express 14(23), 10996–11001 (2006).
    [CrossRef] [PubMed]
  7. M. Leigh, W. Shi, J. Zong, Z. Yao, S. Jiang, and N. Peyghambarian, “High peak power single frequency pulses using a short polarization maintaining phosphate glass fiber with a large core,” Appl. Phys. Lett. 92(18), 181108 (2008).
    [CrossRef]
  8. A. Liem, J. Limpert, H. Zellmer, and A. Tünnermann, “100-W single-frequency master-oscillator fiber power amplifier,” Opt. Lett. 28(17), 1537–1539 (2003).
    [CrossRef] [PubMed]
  9. Y. Jeong, J. Nilsson, J. K. Sahu, D. B. S. Soh, C. Alegria, P. Dupriez, C. A. Codemard, D. N. Payne, R. Horley, L. M. B. Hickey, L. Wanzcyk, C. E. Chryssou, J. A. Alvarez-Chavez, and P. W. Turner, “Single-frequency, single-mode, plane-polarized ytterbium-doped fiber master oscillator power amplifier source with 264 W of output power,” Opt. Lett. 30(5), 459–461 (2005).
    [CrossRef] [PubMed]
  10. Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, “Power scaling of single-frequency ytterbium-doped fiber master-oscillator power-amplifier sources up to 500 W,” IEEE J. Sel. Top. Quantum Electron. 13(3), 546–551 (2007).
    [CrossRef]
  11. G. D. Goodno, L. D. Book, and J. E. Rothenberg, “Low-phase-noise, single-frequency, single-mode 608 W thulium fiber amplifier,” Opt. Lett. 34(8), 1204–1206 (2009).
    [CrossRef] [PubMed]
  12. L. Pearson, J. W. Kim, Z. Zhang, M. Ibsen, J. K. Sahu, and W. A. Clarkson, “High-power linearly-polarized single-frequency thulium-doped fiber master-oscillator power-amplifier,” Opt. Express 18(2), 1607–1612 (2010).
    [CrossRef] [PubMed]
  13. C. D. Brooks and F. Di Teodoro, “1-mJ energy, 1-MW peak-power, 10-W average-power, spectrally narrow, diffraction-limited pulses from a photonic-crystal fiber amplifier,” Opt. Express 13(22), 8999–9002 (2005).
    [CrossRef] [PubMed]
  14. W. Shi, E. B. Petersen, Z. Yao, D. T. Nguyen, J. Zong, M. A. Stephen, A. Chavez-Pirson, and N. Peyghambarian, “Kilowatt-level stimulated-Brillouin-scattering-threshold monolithic transform-limited 100 ns pulsed fiber laser at 1530 nm,” Opt. Lett. 35(14), 2418–2420 (2010).
    [CrossRef] [PubMed]
  15. W. Shi, E. B. Petersen, D. T. Nguyen, Z. Yao, A. Chavez-Pirson, N. Peyghambarian, and J. Yu, “220 μJ monolithic single-frequency Q-switched fiber laser at 2 μm by using highly Tm-doped germanate fibers,” Opt. Lett. 36(18), 3575–3577 (2011).
    [CrossRef] [PubMed]
  16. A. Dergachev, D. Armstrong, A. Smith, T. Drake, and M. Dubois, “3.4-mum ZGP RISTRA nanosecond optical parametric oscillator pumped by a 2.05-mum Ho:YLF MOPA system,” Opt. Express 15(22), 14404–14413 (2007).
    [CrossRef] [PubMed]
  17. W. Shi, E. Petersen, Q. Fang, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Efficient parametric THz generation pumped by monolithic pulsed fiber lasers at ~2 μm in MOPA configuration,” SPIE Photonic West, (2012).
  18. S. D. Jackson, “Cross relaxation and energy transfer upconversion process relevant to the function of 2 μm Tm3+-doped silica fiber lasers,” Opt. Commun. 230(1-3), 197–203 (2004).
    [CrossRef]
  19. J. Wu, Z. Yao, J. Zong, and S. Jiang, “Highly efficient high-power thulium-doped germanate glass fiber laser,” Opt. Lett. 32(6), 638–640 (2007).
    [CrossRef] [PubMed]
  20. Q. Wang, J. Geng, T. Luo, and S. Jiang, “Mode-locked 2 mum laser with highly thulium-doped silicate fiber,” Opt. Lett. 34(23), 3616–3618 (2009).
    [CrossRef] [PubMed]
  21. B. M. Walsh and N. P. Barnes, “Comparison of Tm-doped ZBLAN and Silicate Fiber Lasers Operating Near 2.0 Micrometers,” in Advanced Solid-State Photonics, San Antonio, Texas, (2003).
  22. Q. Fang, W. Shi, E. Petersen, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Half-mJ all fiber based single frequency nanosecond pulsed fiber laser at 2 μm,” IEEE Photon. Technol. Lett. 24(5), 353–355 (2012).
    [CrossRef]
  23. D. N. Schimpf, C. Ruchert, D. Nodop, J. Limpert, A. Tünnermann, and F. Salin, “Compensation of pulse-distortion in saturated laser amplifiers,” Opt. Express 16(22), 17637–17646 (2008).
    [CrossRef] [PubMed]
  24. G. P. Agrawal, Nonlinear Fiber Optics, Third Edition (Academic, 2001).
  25. J. Wu, “Thulium doped microsphere laser and fiber laser,” Dissertation, University of Arizona, (2005).
  26. A. E. Siegman, Lasers, First Edition (Academic, 1986).

2012 (1)

Q. Fang, W. Shi, E. Petersen, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Half-mJ all fiber based single frequency nanosecond pulsed fiber laser at 2 μm,” IEEE Photon. Technol. Lett. 24(5), 353–355 (2012).
[CrossRef]

2011 (1)

2010 (2)

2009 (3)

2008 (2)

D. N. Schimpf, C. Ruchert, D. Nodop, J. Limpert, A. Tünnermann, and F. Salin, “Compensation of pulse-distortion in saturated laser amplifiers,” Opt. Express 16(22), 17637–17646 (2008).
[CrossRef] [PubMed]

M. Leigh, W. Shi, J. Zong, Z. Yao, S. Jiang, and N. Peyghambarian, “High peak power single frequency pulses using a short polarization maintaining phosphate glass fiber with a large core,” Appl. Phys. Lett. 92(18), 181108 (2008).
[CrossRef]

2007 (6)

2006 (1)

2005 (2)

2004 (1)

S. D. Jackson, “Cross relaxation and energy transfer upconversion process relevant to the function of 2 μm Tm3+-doped silica fiber lasers,” Opt. Commun. 230(1-3), 197–203 (2004).
[CrossRef]

2003 (1)

Alegria, C.

Alvarez-Chavez, J. A.

Armstrong, D.

Book, L. D.

Brooks, C. D.

Chavez-Pirson, A.

Q. Fang, W. Shi, E. Petersen, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Half-mJ all fiber based single frequency nanosecond pulsed fiber laser at 2 μm,” IEEE Photon. Technol. Lett. 24(5), 353–355 (2012).
[CrossRef]

W. Shi, E. B. Petersen, D. T. Nguyen, Z. Yao, A. Chavez-Pirson, N. Peyghambarian, and J. Yu, “220 μJ monolithic single-frequency Q-switched fiber laser at 2 μm by using highly Tm-doped germanate fibers,” Opt. Lett. 36(18), 3575–3577 (2011).
[CrossRef] [PubMed]

W. Shi, E. B. Petersen, Z. Yao, D. T. Nguyen, J. Zong, M. A. Stephen, A. Chavez-Pirson, and N. Peyghambarian, “Kilowatt-level stimulated-Brillouin-scattering-threshold monolithic transform-limited 100 ns pulsed fiber laser at 1530 nm,” Opt. Lett. 35(14), 2418–2420 (2010).
[CrossRef] [PubMed]

J. Wu, Z. Yao, J. Zong, A. Chavez-Pirson, N. Peyghambarian, and J. Yu, “Single frequency fiber laser at 2.05 µm based on Ho-doped germanate glass fiber,” Proc. SPIE 7195, 71951K, 71951K-7 (2009).
[CrossRef]

Chryssou, C. E.

Clarkson, W. A.

Codemard, C. A.

Dergachev, A.

Di Teodoro, F.

Drake, T.

Dubois, M.

Dupriez, P.

Fang, Q.

Q. Fang, W. Shi, E. Petersen, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Half-mJ all fiber based single frequency nanosecond pulsed fiber laser at 2 μm,” IEEE Photon. Technol. Lett. 24(5), 353–355 (2012).
[CrossRef]

Geng, J.

Ghiringhelli, F.

Goodno, G. D.

Hickey, L. M.

Hickey, L. M. B.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, “Power scaling of single-frequency ytterbium-doped fiber master-oscillator power-amplifier sources up to 500 W,” IEEE J. Sel. Top. Quantum Electron. 13(3), 546–551 (2007).
[CrossRef]

Y. Jeong, J. Nilsson, J. K. Sahu, D. B. S. Soh, C. Alegria, P. Dupriez, C. A. Codemard, D. N. Payne, R. Horley, L. M. B. Hickey, L. Wanzcyk, C. E. Chryssou, J. A. Alvarez-Chavez, and P. W. Turner, “Single-frequency, single-mode, plane-polarized ytterbium-doped fiber master oscillator power amplifier source with 264 W of output power,” Opt. Lett. 30(5), 459–461 (2005).
[CrossRef] [PubMed]

Horley, R.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, “Power scaling of single-frequency ytterbium-doped fiber master-oscillator power-amplifier sources up to 500 W,” IEEE J. Sel. Top. Quantum Electron. 13(3), 546–551 (2007).
[CrossRef]

Y. Jeong, J. Nilsson, J. K. Sahu, D. B. S. Soh, C. Alegria, P. Dupriez, C. A. Codemard, D. N. Payne, R. Horley, L. M. B. Hickey, L. Wanzcyk, C. E. Chryssou, J. A. Alvarez-Chavez, and P. W. Turner, “Single-frequency, single-mode, plane-polarized ytterbium-doped fiber master oscillator power amplifier source with 264 W of output power,” Opt. Lett. 30(5), 459–461 (2005).
[CrossRef] [PubMed]

Ibsen, M.

Jackson, S. D.

S. D. Jackson, “Cross relaxation and energy transfer upconversion process relevant to the function of 2 μm Tm3+-doped silica fiber lasers,” Opt. Commun. 230(1-3), 197–203 (2004).
[CrossRef]

Jeong, Y.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, “Power scaling of single-frequency ytterbium-doped fiber master-oscillator power-amplifier sources up to 500 W,” IEEE J. Sel. Top. Quantum Electron. 13(3), 546–551 (2007).
[CrossRef]

Y. Jeong, J. Nilsson, J. K. Sahu, D. B. S. Soh, C. Alegria, P. Dupriez, C. A. Codemard, D. N. Payne, R. Horley, L. M. B. Hickey, L. Wanzcyk, C. E. Chryssou, J. A. Alvarez-Chavez, and P. W. Turner, “Single-frequency, single-mode, plane-polarized ytterbium-doped fiber master oscillator power amplifier source with 264 W of output power,” Opt. Lett. 30(5), 459–461 (2005).
[CrossRef] [PubMed]

Jiang, S.

Kieu, K.

Q. Fang, W. Shi, E. Petersen, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Half-mJ all fiber based single frequency nanosecond pulsed fiber laser at 2 μm,” IEEE Photon. Technol. Lett. 24(5), 353–355 (2012).
[CrossRef]

Kim, J. W.

Leigh, M.

Liem, A.

Limpert, J.

Luo, T.

Malinowski, A.

Nguyen, D. T.

Nilsson, J.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, “Power scaling of single-frequency ytterbium-doped fiber master-oscillator power-amplifier sources up to 500 W,” IEEE J. Sel. Top. Quantum Electron. 13(3), 546–551 (2007).
[CrossRef]

Y. Jeong, J. Nilsson, J. K. Sahu, D. B. S. Soh, C. Alegria, P. Dupriez, C. A. Codemard, D. N. Payne, R. Horley, L. M. B. Hickey, L. Wanzcyk, C. E. Chryssou, J. A. Alvarez-Chavez, and P. W. Turner, “Single-frequency, single-mode, plane-polarized ytterbium-doped fiber master oscillator power amplifier source with 264 W of output power,” Opt. Lett. 30(5), 459–461 (2005).
[CrossRef] [PubMed]

Nodop, D.

Payne, D. N.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, “Power scaling of single-frequency ytterbium-doped fiber master-oscillator power-amplifier sources up to 500 W,” IEEE J. Sel. Top. Quantum Electron. 13(3), 546–551 (2007).
[CrossRef]

Y. Jeong, J. Nilsson, J. K. Sahu, D. B. S. Soh, C. Alegria, P. Dupriez, C. A. Codemard, D. N. Payne, R. Horley, L. M. B. Hickey, L. Wanzcyk, C. E. Chryssou, J. A. Alvarez-Chavez, and P. W. Turner, “Single-frequency, single-mode, plane-polarized ytterbium-doped fiber master oscillator power amplifier source with 264 W of output power,” Opt. Lett. 30(5), 459–461 (2005).
[CrossRef] [PubMed]

Pearson, L.

Petersen, E.

Q. Fang, W. Shi, E. Petersen, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Half-mJ all fiber based single frequency nanosecond pulsed fiber laser at 2 μm,” IEEE Photon. Technol. Lett. 24(5), 353–355 (2012).
[CrossRef]

Petersen, E. B.

Peyghambarian, N.

Q. Fang, W. Shi, E. Petersen, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Half-mJ all fiber based single frequency nanosecond pulsed fiber laser at 2 μm,” IEEE Photon. Technol. Lett. 24(5), 353–355 (2012).
[CrossRef]

W. Shi, E. B. Petersen, D. T. Nguyen, Z. Yao, A. Chavez-Pirson, N. Peyghambarian, and J. Yu, “220 μJ monolithic single-frequency Q-switched fiber laser at 2 μm by using highly Tm-doped germanate fibers,” Opt. Lett. 36(18), 3575–3577 (2011).
[CrossRef] [PubMed]

W. Shi, E. B. Petersen, Z. Yao, D. T. Nguyen, J. Zong, M. A. Stephen, A. Chavez-Pirson, and N. Peyghambarian, “Kilowatt-level stimulated-Brillouin-scattering-threshold monolithic transform-limited 100 ns pulsed fiber laser at 1530 nm,” Opt. Lett. 35(14), 2418–2420 (2010).
[CrossRef] [PubMed]

J. Wu, Z. Yao, J. Zong, A. Chavez-Pirson, N. Peyghambarian, and J. Yu, “Single frequency fiber laser at 2.05 µm based on Ho-doped germanate glass fiber,” Proc. SPIE 7195, 71951K, 71951K-7 (2009).
[CrossRef]

M. Leigh, W. Shi, J. Zong, Z. Yao, S. Jiang, and N. Peyghambarian, “High peak power single frequency pulses using a short polarization maintaining phosphate glass fiber with a large core,” Appl. Phys. Lett. 92(18), 181108 (2008).
[CrossRef]

M. Leigh, W. Shi, J. Zong, J. Wang, S. Jiang, and N. Peyghambarian, “Compact, single-frequency all-fiber Q-switched laser at 1 microm,” Opt. Lett. 32(8), 897–899 (2007).
[CrossRef] [PubMed]

Richardson, D. J.

Rothenberg, J. E.

Ruchert, C.

Sahu, J. K.

Salin, F.

Schimpf, D. N.

Shi, W.

Smith, A.

Soh, D. B. S.

Stephen, M. A.

Tünnermann, A.

Turner, P. W.

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, “Power scaling of single-frequency ytterbium-doped fiber master-oscillator power-amplifier sources up to 500 W,” IEEE J. Sel. Top. Quantum Electron. 13(3), 546–551 (2007).
[CrossRef]

Y. Jeong, J. Nilsson, J. K. Sahu, D. B. S. Soh, C. Alegria, P. Dupriez, C. A. Codemard, D. N. Payne, R. Horley, L. M. B. Hickey, L. Wanzcyk, C. E. Chryssou, J. A. Alvarez-Chavez, and P. W. Turner, “Single-frequency, single-mode, plane-polarized ytterbium-doped fiber master oscillator power amplifier source with 264 W of output power,” Opt. Lett. 30(5), 459–461 (2005).
[CrossRef] [PubMed]

Vu, K. T.

Wang, J.

Wang, Q.

Wanzcyk, L.

Wu, J.

Yao, Z.

Yu, J.

Zellmer, H.

Zervas, M. N.

Zhang, Z.

Zong, J.

Appl. Phys. Lett. (1)

M. Leigh, W. Shi, J. Zong, Z. Yao, S. Jiang, and N. Peyghambarian, “High peak power single frequency pulses using a short polarization maintaining phosphate glass fiber with a large core,” Appl. Phys. Lett. 92(18), 181108 (2008).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron. (1)

Y. Jeong, J. Nilsson, J. K. Sahu, D. N. Payne, R. Horley, L. M. B. Hickey, and P. W. Turner, “Power scaling of single-frequency ytterbium-doped fiber master-oscillator power-amplifier sources up to 500 W,” IEEE J. Sel. Top. Quantum Electron. 13(3), 546–551 (2007).
[CrossRef]

IEEE Photon. Technol. Lett. (1)

Q. Fang, W. Shi, E. Petersen, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Half-mJ all fiber based single frequency nanosecond pulsed fiber laser at 2 μm,” IEEE Photon. Technol. Lett. 24(5), 353–355 (2012).
[CrossRef]

Opt. Commun. (1)

S. D. Jackson, “Cross relaxation and energy transfer upconversion process relevant to the function of 2 μm Tm3+-doped silica fiber lasers,” Opt. Commun. 230(1-3), 197–203 (2004).
[CrossRef]

Opt. Express (5)

Opt. Lett. (10)

A. Liem, J. Limpert, H. Zellmer, and A. Tünnermann, “100-W single-frequency master-oscillator fiber power amplifier,” Opt. Lett. 28(17), 1537–1539 (2003).
[CrossRef] [PubMed]

Y. Jeong, J. Nilsson, J. K. Sahu, D. B. S. Soh, C. Alegria, P. Dupriez, C. A. Codemard, D. N. Payne, R. Horley, L. M. B. Hickey, L. Wanzcyk, C. E. Chryssou, J. A. Alvarez-Chavez, and P. W. Turner, “Single-frequency, single-mode, plane-polarized ytterbium-doped fiber master oscillator power amplifier source with 264 W of output power,” Opt. Lett. 30(5), 459–461 (2005).
[CrossRef] [PubMed]

J. Geng, J. Wu, S. Jiang, and J. Yu, “Efficient operation of diode-pumped single-frequency thulium-doped fiber lasers near 2 microm,” Opt. Lett. 32(4), 355–357 (2007).
[CrossRef] [PubMed]

M. Leigh, W. Shi, J. Zong, J. Wang, S. Jiang, and N. Peyghambarian, “Compact, single-frequency all-fiber Q-switched laser at 1 microm,” Opt. Lett. 32(8), 897–899 (2007).
[CrossRef] [PubMed]

W. Shi, M. Leigh, J. Zong, and S. Jiang, “Single-frequency terahertz source pumped by Q-switched fiber lasers based on difference-frequency generation in GaSe crystal,” Opt. Lett. 32(8), 949–951 (2007).
[CrossRef] [PubMed]

W. Shi, E. B. Petersen, Z. Yao, D. T. Nguyen, J. Zong, M. A. Stephen, A. Chavez-Pirson, and N. Peyghambarian, “Kilowatt-level stimulated-Brillouin-scattering-threshold monolithic transform-limited 100 ns pulsed fiber laser at 1530 nm,” Opt. Lett. 35(14), 2418–2420 (2010).
[CrossRef] [PubMed]

W. Shi, E. B. Petersen, D. T. Nguyen, Z. Yao, A. Chavez-Pirson, N. Peyghambarian, and J. Yu, “220 μJ monolithic single-frequency Q-switched fiber laser at 2 μm by using highly Tm-doped germanate fibers,” Opt. Lett. 36(18), 3575–3577 (2011).
[CrossRef] [PubMed]

G. D. Goodno, L. D. Book, and J. E. Rothenberg, “Low-phase-noise, single-frequency, single-mode 608 W thulium fiber amplifier,” Opt. Lett. 34(8), 1204–1206 (2009).
[CrossRef] [PubMed]

J. Wu, Z. Yao, J. Zong, and S. Jiang, “Highly efficient high-power thulium-doped germanate glass fiber laser,” Opt. Lett. 32(6), 638–640 (2007).
[CrossRef] [PubMed]

Q. Wang, J. Geng, T. Luo, and S. Jiang, “Mode-locked 2 mum laser with highly thulium-doped silicate fiber,” Opt. Lett. 34(23), 3616–3618 (2009).
[CrossRef] [PubMed]

Proc. SPIE (1)

J. Wu, Z. Yao, J. Zong, A. Chavez-Pirson, N. Peyghambarian, and J. Yu, “Single frequency fiber laser at 2.05 µm based on Ho-doped germanate glass fiber,” Proc. SPIE 7195, 71951K, 71951K-7 (2009).
[CrossRef]

Other (6)

http://npphotonics.com/includes/main.php?pid=49 .

W. Shi, E. Petersen, Q. Fang, K. Kieu, A. Chavez-Pirson, and N. Peyghambarian, “Efficient parametric THz generation pumped by monolithic pulsed fiber lasers at ~2 μm in MOPA configuration,” SPIE Photonic West, (2012).

B. M. Walsh and N. P. Barnes, “Comparison of Tm-doped ZBLAN and Silicate Fiber Lasers Operating Near 2.0 Micrometers,” in Advanced Solid-State Photonics, San Antonio, Texas, (2003).

G. P. Agrawal, Nonlinear Fiber Optics, Third Edition (Academic, 2001).

J. Wu, “Thulium doped microsphere laser and fiber laser,” Dissertation, University of Arizona, (2005).

A. E. Siegman, Lasers, First Edition (Academic, 1986).

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Figures (10)

Fig. 1
Fig. 1

Diagram of single frequency nanosecond pulse generation system.

Fig. 2
Fig. 2

Initial and amplified pulses (after the filter) for (a) rectangular pulse, (b) shaped pulse.

Fig. 3
Fig. 3

Output pulses of pulse generation system shown in Fig. 1 with different pulse duration.

Fig. 4
Fig. 4

Diagram of the two stage power amplifier. The inset is the gain fiber placed in a v-groove in a copper plate and its cross-section. SM: single mode; TDF: thulium doped fiber; LDs: laser diodes.

Fig. 5
Fig. 5

(a) Average power of the pulse under different pump level. Inset: Pulse shape and spectrum when the power is ~16.01 W. (b) Peak power of the pulse under different pump level. Inset: Fabry-Perot scanning spectra and the beam profile of the amplified ~2 ns pulses (over 10 W average power).

Fig. 6
Fig. 6

Energy levels and transitions taken into account in the presented model for Tm3+ in germanate glass.

Fig. 7
Fig. 7

(a) Simulated and measured average power of ~2 ns pulses at 500 kHz repetition rate under different launched pump power. The error bars denote the power fluctuation. (b). Simulated and measured pulse energy of ~15ns pulses at 5 kHz repetition rate under different pump power. The error bars denote the pulse energy fluctuation.

Fig. 8
Fig. 8

The calculated stored energy in the active fiber for seed pulses at different repetition rate under (a) 20 W and (b) 35 W pump when the seed energy is fixed at 20 μJ.

Fig. 9
Fig. 9

The calculated stored pulse energy in the active fiber for different seed energy when the pump and repetition rate are fixed at 20 W and 5 KHz, respectively.

Fig. 10
Fig. 10

Measured pulse energy of ~15ns pulses at 1 kHz repetition rate under different pump level.

Equations (10)

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N 3 t = W 03 N 0 1 τ 31 N 3 K 3011 N 3 N 0 + K 1130 N 1 2
N 1 t = W 01 N 0 W 10 N 1 1 τ 10 N 1 + 1 τ 31 N 3 +2 K 3011 N 3 N 0 2 K 1130 N 1 2
N 0 t = W 03 N 0 W 01 N 0 + W 10 N 1 + 1 τ 10 N 1 K 3011 N 3 N 0 + K 1130 N 1 2
( 1 V s t + z ) P s (z,t)={ Γ s [ σ 10 ( ν s ) N 1 (z,t) σ 01 ( ν s ) N 0 (z,t)] α losssignal } P s (z,t)
( 1 V ASE t + z ) P ASE (+,) ( ν i ,z,t)={ Γ s [ σ 10 ( ν i ) N 1 (z,t) σ 01 ( ν i ) N 0 (z,t)] α losssignal } P ASE (+,) ( ν i ,z,t)+ Γ s σ 10 ( ν i ) N 1 (z,t) P 0
( 1 V p t + z ) P p (z,t)=[ Γ p σ 03 ( ν p ) N 0 (z,t) α losspump ] P p (z,t)
W 01 = Γ s { σ 01 ( ν s ) P s (z,t) h ν s A + i σ 01 ( ν i )[ P ASE (+) ( ν i ,z,t)+ P ASE () ( ν i ,z,t)] h ν i A }
W 10 = Γ s { σ 10 ( ν s ) P s (z,t) h ν s A + i σ 10 ( ν i )[ P ASE (+) ( ν i ,z,t)+ P ASE () ( ν i ,z,t)] h ν i A }
W 03 = Γ p σ 03 ( ν p ) P p (z,t) h ν p A
E s (t)=h ν s A 0 L N 1 (z,t)dz

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