Abstract

A Q-switched microchip laser generating 1064 nm wavelength, subnanosecond pulses at a 13.4 kHz repetition rate was used to seed a dual-stage amplifier featuring a 40μm core Yb-doped photonic-crystal fiber (PCF) as the power amplifier. From this source, we obtained diffraction-limited (M2=1.05), 450ps pulses of energy >0.7mJ, peak power in excess of 1.5 MW, and an average power of 9.5W. By further amplifying the PCF output in a multimode 140μm core Yb-doped fiber, we generated a peak power in excess of 4.5 MW, the highest obtained in a fiber source to our knowledge.

© 2005 Optical Society of America

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References

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  1. V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.
  2. G. P. Agrawal, Nonlinear Fiber Optics, 3rd Ed. (Academic, 2001).
  3. A. Galvanauskas, IEEE J. Sel. Top. Quantum Electron. 7, 504 (2001).
    [CrossRef]
  4. F. Di Teodoro and C. D. Brooks, Opt. Lett. 30, 2694 (2005).
    [CrossRef] [PubMed]
  5. W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.
  6. M.-Y. Cheng, Y.-C. Chang, A. Galvanauskas, P. Mamidipudi, R. Changkakoti, and P. Gatchell, Opt. Lett. 30, 358 (2005).
    [CrossRef] [PubMed]
  7. A. E. Siegman, Lasers (University Science Books, 1986), Chap. 10.2, pp. 384–386.
  8. B. Richou, I. Schertz, I. Gobin, and J. Richou, Appl. Opt. 36, 1610 (1997).
    [CrossRef] [PubMed]
  9. T. Schmidt-Uhlig, P. Karlitschek, G. Marowsky, and Y. Sano, Appl. Phys. B 72, 183 (2001).
    [CrossRef]

2005

2001

A. Galvanauskas, IEEE J. Sel. Top. Quantum Electron. 7, 504 (2001).
[CrossRef]

T. Schmidt-Uhlig, P. Karlitschek, G. Marowsky, and Y. Sano, Appl. Phys. B 72, 183 (2001).
[CrossRef]

1997

Abramov, M.

V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.

Agrawal, G. P.

G. P. Agrawal, Nonlinear Fiber Optics, 3rd Ed. (Academic, 2001).

Brooks, C. D.

Chang, Y.-C.

Changkakoti, R.

Chen, J.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

Chen, Y.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

Cheng, M.-Y.

Di Teodoro, F.

Farroni, J.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

Ferin, S.

V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.

Fomin, V.

V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.

Galvanauskas, A.

Gapontsev, D. V.

V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.

Gapontsev, V. P.

V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.

Gatchell, P.

Gobin, I.

Hagan, D.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

Karlitschek, P.

T. Schmidt-Uhlig, P. Karlitschek, G. Marowsky, and Y. Sano, Appl. Phys. B 72, 183 (2001).
[CrossRef]

Mamidipudi, P.

Marowsky, G.

T. Schmidt-Uhlig, P. Karlitschek, G. Marowsky, and Y. Sano, Appl. Phys. B 72, 183 (2001).
[CrossRef]

Mashkin, A.

V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.

McIntosh, B.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

Platonov, N. S.

V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.

Richou, B.

Richou, J.

Sano, Y.

T. Schmidt-Uhlig, P. Karlitschek, G. Marowsky, and Y. Sano, Appl. Phys. B 72, 183 (2001).
[CrossRef]

Schertz, I.

Schmidt-Uhlig, T.

T. Schmidt-Uhlig, P. Karlitschek, G. Marowsky, and Y. Sano, Appl. Phys. B 72, 183 (2001).
[CrossRef]

Shkurikhin, O.

V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.

Siegman, A. E.

A. E. Siegman, Lasers (University Science Books, 1986), Chap. 10.2, pp. 384–386.

Soileau, M. J.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

Tankala, K.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

Torruellas, W.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

Webster, S.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

Appl. Opt.

Appl. Phys. B

T. Schmidt-Uhlig, P. Karlitschek, G. Marowsky, and Y. Sano, Appl. Phys. B 72, 183 (2001).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron.

A. Galvanauskas, IEEE J. Sel. Top. Quantum Electron. 7, 504 (2001).
[CrossRef]

Opt. Lett.

Other

A. E. Siegman, Lasers (University Science Books, 1986), Chap. 10.2, pp. 384–386.

W. Torruellas, Y. Chen, B. McIntosh, J. Chen, J. Farroni, K. Tankala, S. Webster, D. Hagan, and M. J. Soileau, presented at Technical Digest Solid State and Diode Laser Technology Review, Los Angeles, June7–9, 2005, Fiber-7.

V. P. Gapontsev, D. V. Gapontsev, N. S. Platonov, O. Shkurikhin, V. Fomin, A. Mashkin, M. Abramov, and S. Ferin, in Proceedings of the Conference on Laser and Electro-Optics (CLEO-Europe) (2005), paper CJ1-1-THU.

G. P. Agrawal, Nonlinear Fiber Optics, 3rd Ed. (Academic, 2001).

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Figures (6)

Fig. 1
Fig. 1

(Color online) PCF-amplifier pulse energy and average power versus launched pump power. Left-corner inset: setup of dual-stage amplifier. ML, microchip laser; OI, optical isolator; L, lens; YDF, Yb-doped fiber; LPF, long-pass filter; BPF, bandpass filter; PCF, Yb-doped photonic crystal fiber. Right-corner inset: side view of 2 mm end cap on the output facet of the PCF.

Fig. 2
Fig. 2

(Color online) Pulse temporal profiles. The vertical scale has been calibrated in units of power by equating the area under the profiles to the corresponding measured pulse energy. (a) Direct microchip-laser output; (b) PCF-amplifier output, pulse energy 0.40 mJ ; (c) PCF-amplifier output, pulse energy 0.72 mJ .

Fig. 3
Fig. 3

(Color online) Peak-normalized spectrum of PCF amplifier output: (a) pulse energy 0.40 mJ , (b) pulse energy 0.72 mJ .

Fig. 4
Fig. 4

(Color online) 1 e 2 radius, ω, of the PCF amplifier output beam versus distance z from the waist location ( z = 0 ) . Solid curve, fit of ω to ω = ω 0 { 1 + [ M 2 λ z ( π ω 0 2 ) ] 2 } 0.5 , where λ and ω 0 are the wavelength and waist radius, respectively. Inset, near-field image of the amplifier output at 0.72 mJ pulse energy.

Fig. 5
Fig. 5

(Color online) Multimode-fiber-amplifier pulse energy and average power versus launched pump power. Inset, setup of three-stage amplifier: L, lens; BPF, bandpass filter; MM–YDF, multimode Yb-doped fiber; LPF, long-pass filter.

Fig. 6
Fig. 6

(Color online) Peak-normalized spectrum of multimode-fiber-amplifier output at pulse energy 2.2 mJ . Inset, corresponding output-pulse temporal profile. The vertical scale has been calibrated as explained in Fig. 2.

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