Abstract

We present a novel, compact and power scalable Ho:YAG laser based on intracavity side-pumping by a high-power Tm:YLF slab laser. 14W of continuous wave output power is obtained at 2.09μm in the current experiments, with the clear prospect of reaching the 100W regime in a power scaled version.

© 2006 Optical Society of America

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  1. S. A. Payne, L. L. Chase, L. K. Smith, W. L. Kway, and W. F. Krupke, "Infrared cross-section measurements for crystals doped with Er3+, Tm3+, and Ho3+," IEEE J. Quantum Electron. 28, 2619-2630 (1992).
    [CrossRef]
  2. R. Targ, M. J. Kavaya, R. M. Huffaker, and R. L. Bowles, "Coherent lidar airborne windshear sensor: performance evaluation," Appl. Opt. 30, 2013-2025 (1991).
    [CrossRef] [PubMed]
  3. P. A. Budni, L. A. Pomeranz, M. L. Lemons, C. A. Miller, J. R. Mosto, and E. P. Chicklis, "Efficient mid-infrared lasing using 1.9-µm-pumped Ho:YAG and ZnGeP2 optical parametric oscillators," J. Opt. Soc. Am. B 17, 723-727 (2000).
    [CrossRef]
  4. C. D. Nabors, J. Ochoa, T. Y. Fan, A. Sanchez, H. K. Choi, and G. W. Turner, "Ho:YAG laser pumped by 1.9-µm diode lasers," IEEE J. Quantum Electron. 31, 1603-1605 (1995).
    [CrossRef]
  5. T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Continuous-wave operation at 2.1 µm of a diode-laser-pumped, Tm-sensitized Ho:Y3Al5O12 laser at 300 K," Opt. Lett. 12, 678-680 (1987).
    [CrossRef] [PubMed]
  6. G. J. Kintz, L. Esterowitz, and R. Allen, "CW diode-pumped Tm3+, Ho3+-YAG 2.1-µm room temperature laser," Electron. Lett. 23, 616-616 (1987).
    [CrossRef]
  7. T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Spectroscopy and diode laser-pumped operation of Tm,Ho:YAG," IEEE J. Quantum Electron. 24, 924-933 (1988).
    [CrossRef]
  8. R. C. Stoneman and L. Esterowitz, "Intracavity-pumped 2.09-µm Ho:YAG laser," Opt. Lett. 17, 736-738 (1992).
    [CrossRef] [PubMed]
  9. A. Abdolvand, D. Y. Shen, L. J. Cooper, R. B. Williams, and W. A. Clarkson, "Ultra-efficient Ho:YAG laser end-pumped by a cladding-pumped Tm-doped silica fiber laser," in OSA Trends in Optics and Photonics, Vol. 83, Advanced Solid-State Photonics, J. J. Zayhowski, ed. (Optical Society of America, Washington, DC 2003), pp.7-12.
  10. E. Lippert, G. Arisholm, G. Rustad, and K. Sternersen, "Fiber laser pumped mid-IR source," in OSA Trends in Optics and Photonics, Vol. 83, Advanced Solid-State Photonics, J.J. Zayhowski, ed. (Optical Society of America, Washington, DC 2003), pp. 292-297.
  11. Y. Jeong, P. Dupriez, J. K. Sahu, J. Nilsson, D. Y. Shen, W. A. Clarkson, and S. D. Jackson, "Power scaling of 2µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975nm," Electron. Lett. 41, 173-174 (2005).
    [CrossRef]
  12. P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, "High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holium lasers," IEEE J. Sel. Top. Quantum Electron. 6,629-635 (2000).
    [CrossRef]
  13. S. So, J. I. Mackenzie, D. P. Shepherd, W. A. Clarkson, J. G. Betterton, and E. K. Gorton, "A power scaling strategy for longitudinally diode-pumped Tm:YLF lasers," Appl. Phys. B 84, 389-393 (2006).
    [CrossRef]
  14. N. P. Barnes, B. M. Walsh, and E. D. Filer, "Ho:Ho upconversion: applications to Ho lasers," J. Opt. Soc. Am. B 20, 1212-1219 (2003).
    [CrossRef]
  15. C. Bollig, R. A. Hayward, W. A. Clarkson, and D. C. Hanna,"2-W Ho:YAG laser intracavity pumped by a diode-pumped Tm:YAG laser," Opt. Lett. 23, 1757-1759 (1998).
    [CrossRef]
  16. M. Schellhorn, A. Hirth, and C. Kieleck, "Ho:YAG laser intracavity pumped by a diode-pumped Tm:YLF laser," Opt. Lett. 28, 1933-1935 (2003).
    [CrossRef] [PubMed]
  17. J. M. Eggleston, T. J. Kane, K. Khun, J. Unternahrer, and R. L. Byer, "The slab geometry laser - part I: theory," IEEE J. Quantum Electron. 20, 289-301 (1984).
    [CrossRef]
  18. Y.-K. Kuo and Y.-A. Chang, "Numerical study of passive Q switching of a Tm:YAG laser with a Ho:YLF solid-state saturable absorber," Appl. Opt. 42, 1685-1691 (2003).
    [CrossRef] [PubMed]
  19. B. M. Walsh, N. P. Barnes, and B. Di Bartolo, "Branching ratios, cross sections, and radiative lifetimes of rare earth ions in solids: application to Tm3+ and Ho3+ ions in LiYF4," J. Appl. Phys. 83, 2772-2786 (1998).
    [CrossRef]

2006 (1)

S. So, J. I. Mackenzie, D. P. Shepherd, W. A. Clarkson, J. G. Betterton, and E. K. Gorton, "A power scaling strategy for longitudinally diode-pumped Tm:YLF lasers," Appl. Phys. B 84, 389-393 (2006).
[CrossRef]

2005 (1)

Y. Jeong, P. Dupriez, J. K. Sahu, J. Nilsson, D. Y. Shen, W. A. Clarkson, and S. D. Jackson, "Power scaling of 2µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975nm," Electron. Lett. 41, 173-174 (2005).
[CrossRef]

2003 (3)

2000 (2)

P. A. Budni, L. A. Pomeranz, M. L. Lemons, C. A. Miller, J. R. Mosto, and E. P. Chicklis, "Efficient mid-infrared lasing using 1.9-µm-pumped Ho:YAG and ZnGeP2 optical parametric oscillators," J. Opt. Soc. Am. B 17, 723-727 (2000).
[CrossRef]

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, "High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holium lasers," IEEE J. Sel. Top. Quantum Electron. 6,629-635 (2000).
[CrossRef]

1998 (2)

B. M. Walsh, N. P. Barnes, and B. Di Bartolo, "Branching ratios, cross sections, and radiative lifetimes of rare earth ions in solids: application to Tm3+ and Ho3+ ions in LiYF4," J. Appl. Phys. 83, 2772-2786 (1998).
[CrossRef]

C. Bollig, R. A. Hayward, W. A. Clarkson, and D. C. Hanna,"2-W Ho:YAG laser intracavity pumped by a diode-pumped Tm:YAG laser," Opt. Lett. 23, 1757-1759 (1998).
[CrossRef]

1995 (1)

C. D. Nabors, J. Ochoa, T. Y. Fan, A. Sanchez, H. K. Choi, and G. W. Turner, "Ho:YAG laser pumped by 1.9-µm diode lasers," IEEE J. Quantum Electron. 31, 1603-1605 (1995).
[CrossRef]

1992 (2)

S. A. Payne, L. L. Chase, L. K. Smith, W. L. Kway, and W. F. Krupke, "Infrared cross-section measurements for crystals doped with Er3+, Tm3+, and Ho3+," IEEE J. Quantum Electron. 28, 2619-2630 (1992).
[CrossRef]

R. C. Stoneman and L. Esterowitz, "Intracavity-pumped 2.09-µm Ho:YAG laser," Opt. Lett. 17, 736-738 (1992).
[CrossRef] [PubMed]

1991 (1)

1988 (1)

T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Spectroscopy and diode laser-pumped operation of Tm,Ho:YAG," IEEE J. Quantum Electron. 24, 924-933 (1988).
[CrossRef]

1987 (2)

1984 (1)

J. M. Eggleston, T. J. Kane, K. Khun, J. Unternahrer, and R. L. Byer, "The slab geometry laser - part I: theory," IEEE J. Quantum Electron. 20, 289-301 (1984).
[CrossRef]

Allen, R.

G. J. Kintz, L. Esterowitz, and R. Allen, "CW diode-pumped Tm3+, Ho3+-YAG 2.1-µm room temperature laser," Electron. Lett. 23, 616-616 (1987).
[CrossRef]

Barnes, N. P.

N. P. Barnes, B. M. Walsh, and E. D. Filer, "Ho:Ho upconversion: applications to Ho lasers," J. Opt. Soc. Am. B 20, 1212-1219 (2003).
[CrossRef]

B. M. Walsh, N. P. Barnes, and B. Di Bartolo, "Branching ratios, cross sections, and radiative lifetimes of rare earth ions in solids: application to Tm3+ and Ho3+ ions in LiYF4," J. Appl. Phys. 83, 2772-2786 (1998).
[CrossRef]

Betterton, J. G.

S. So, J. I. Mackenzie, D. P. Shepherd, W. A. Clarkson, J. G. Betterton, and E. K. Gorton, "A power scaling strategy for longitudinally diode-pumped Tm:YLF lasers," Appl. Phys. B 84, 389-393 (2006).
[CrossRef]

Bollig, C.

Bowles, R. L.

Budni, P. A.

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, "High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holium lasers," IEEE J. Sel. Top. Quantum Electron. 6,629-635 (2000).
[CrossRef]

P. A. Budni, L. A. Pomeranz, M. L. Lemons, C. A. Miller, J. R. Mosto, and E. P. Chicklis, "Efficient mid-infrared lasing using 1.9-µm-pumped Ho:YAG and ZnGeP2 optical parametric oscillators," J. Opt. Soc. Am. B 17, 723-727 (2000).
[CrossRef]

Byer, R. L.

T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Spectroscopy and diode laser-pumped operation of Tm,Ho:YAG," IEEE J. Quantum Electron. 24, 924-933 (1988).
[CrossRef]

T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Continuous-wave operation at 2.1 µm of a diode-laser-pumped, Tm-sensitized Ho:Y3Al5O12 laser at 300 K," Opt. Lett. 12, 678-680 (1987).
[CrossRef] [PubMed]

J. M. Eggleston, T. J. Kane, K. Khun, J. Unternahrer, and R. L. Byer, "The slab geometry laser - part I: theory," IEEE J. Quantum Electron. 20, 289-301 (1984).
[CrossRef]

Chang, Y.-A.

Chase, L. L.

S. A. Payne, L. L. Chase, L. K. Smith, W. L. Kway, and W. F. Krupke, "Infrared cross-section measurements for crystals doped with Er3+, Tm3+, and Ho3+," IEEE J. Quantum Electron. 28, 2619-2630 (1992).
[CrossRef]

Chicklis, E. P.

P. A. Budni, L. A. Pomeranz, M. L. Lemons, C. A. Miller, J. R. Mosto, and E. P. Chicklis, "Efficient mid-infrared lasing using 1.9-µm-pumped Ho:YAG and ZnGeP2 optical parametric oscillators," J. Opt. Soc. Am. B 17, 723-727 (2000).
[CrossRef]

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, "High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holium lasers," IEEE J. Sel. Top. Quantum Electron. 6,629-635 (2000).
[CrossRef]

Choi, H. K.

C. D. Nabors, J. Ochoa, T. Y. Fan, A. Sanchez, H. K. Choi, and G. W. Turner, "Ho:YAG laser pumped by 1.9-µm diode lasers," IEEE J. Quantum Electron. 31, 1603-1605 (1995).
[CrossRef]

Clarkson, W. A.

S. So, J. I. Mackenzie, D. P. Shepherd, W. A. Clarkson, J. G. Betterton, and E. K. Gorton, "A power scaling strategy for longitudinally diode-pumped Tm:YLF lasers," Appl. Phys. B 84, 389-393 (2006).
[CrossRef]

Y. Jeong, P. Dupriez, J. K. Sahu, J. Nilsson, D. Y. Shen, W. A. Clarkson, and S. D. Jackson, "Power scaling of 2µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975nm," Electron. Lett. 41, 173-174 (2005).
[CrossRef]

C. Bollig, R. A. Hayward, W. A. Clarkson, and D. C. Hanna,"2-W Ho:YAG laser intracavity pumped by a diode-pumped Tm:YAG laser," Opt. Lett. 23, 1757-1759 (1998).
[CrossRef]

Di Bartolo, B.

B. M. Walsh, N. P. Barnes, and B. Di Bartolo, "Branching ratios, cross sections, and radiative lifetimes of rare earth ions in solids: application to Tm3+ and Ho3+ ions in LiYF4," J. Appl. Phys. 83, 2772-2786 (1998).
[CrossRef]

Dupriez, P.

Y. Jeong, P. Dupriez, J. K. Sahu, J. Nilsson, D. Y. Shen, W. A. Clarkson, and S. D. Jackson, "Power scaling of 2µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975nm," Electron. Lett. 41, 173-174 (2005).
[CrossRef]

Eggleston, J. M.

J. M. Eggleston, T. J. Kane, K. Khun, J. Unternahrer, and R. L. Byer, "The slab geometry laser - part I: theory," IEEE J. Quantum Electron. 20, 289-301 (1984).
[CrossRef]

Esterowitz, L.

R. C. Stoneman and L. Esterowitz, "Intracavity-pumped 2.09-µm Ho:YAG laser," Opt. Lett. 17, 736-738 (1992).
[CrossRef] [PubMed]

G. J. Kintz, L. Esterowitz, and R. Allen, "CW diode-pumped Tm3+, Ho3+-YAG 2.1-µm room temperature laser," Electron. Lett. 23, 616-616 (1987).
[CrossRef]

Fan, T. Y.

C. D. Nabors, J. Ochoa, T. Y. Fan, A. Sanchez, H. K. Choi, and G. W. Turner, "Ho:YAG laser pumped by 1.9-µm diode lasers," IEEE J. Quantum Electron. 31, 1603-1605 (1995).
[CrossRef]

T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Spectroscopy and diode laser-pumped operation of Tm,Ho:YAG," IEEE J. Quantum Electron. 24, 924-933 (1988).
[CrossRef]

T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Continuous-wave operation at 2.1 µm of a diode-laser-pumped, Tm-sensitized Ho:Y3Al5O12 laser at 300 K," Opt. Lett. 12, 678-680 (1987).
[CrossRef] [PubMed]

Filer, E. D.

Gorton, E. K.

S. So, J. I. Mackenzie, D. P. Shepherd, W. A. Clarkson, J. G. Betterton, and E. K. Gorton, "A power scaling strategy for longitudinally diode-pumped Tm:YLF lasers," Appl. Phys. B 84, 389-393 (2006).
[CrossRef]

Hanna, D. C.

Hayward, R. A.

Hirth, A.

Huber, G.

T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Spectroscopy and diode laser-pumped operation of Tm,Ho:YAG," IEEE J. Quantum Electron. 24, 924-933 (1988).
[CrossRef]

T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Continuous-wave operation at 2.1 µm of a diode-laser-pumped, Tm-sensitized Ho:Y3Al5O12 laser at 300 K," Opt. Lett. 12, 678-680 (1987).
[CrossRef] [PubMed]

Huffaker, R. M.

Jackson, S. D.

Y. Jeong, P. Dupriez, J. K. Sahu, J. Nilsson, D. Y. Shen, W. A. Clarkson, and S. D. Jackson, "Power scaling of 2µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975nm," Electron. Lett. 41, 173-174 (2005).
[CrossRef]

Jeong, Y.

Y. Jeong, P. Dupriez, J. K. Sahu, J. Nilsson, D. Y. Shen, W. A. Clarkson, and S. D. Jackson, "Power scaling of 2µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975nm," Electron. Lett. 41, 173-174 (2005).
[CrossRef]

Kane, T. J.

J. M. Eggleston, T. J. Kane, K. Khun, J. Unternahrer, and R. L. Byer, "The slab geometry laser - part I: theory," IEEE J. Quantum Electron. 20, 289-301 (1984).
[CrossRef]

Kavaya, M. J.

Khun, K.

J. M. Eggleston, T. J. Kane, K. Khun, J. Unternahrer, and R. L. Byer, "The slab geometry laser - part I: theory," IEEE J. Quantum Electron. 20, 289-301 (1984).
[CrossRef]

Kieleck, C.

Kintz, G. J.

G. J. Kintz, L. Esterowitz, and R. Allen, "CW diode-pumped Tm3+, Ho3+-YAG 2.1-µm room temperature laser," Electron. Lett. 23, 616-616 (1987).
[CrossRef]

Krupke, W. F.

S. A. Payne, L. L. Chase, L. K. Smith, W. L. Kway, and W. F. Krupke, "Infrared cross-section measurements for crystals doped with Er3+, Tm3+, and Ho3+," IEEE J. Quantum Electron. 28, 2619-2630 (1992).
[CrossRef]

Kuo, Y.-K.

Kway, W. L.

S. A. Payne, L. L. Chase, L. K. Smith, W. L. Kway, and W. F. Krupke, "Infrared cross-section measurements for crystals doped with Er3+, Tm3+, and Ho3+," IEEE J. Quantum Electron. 28, 2619-2630 (1992).
[CrossRef]

Lemons, M. L.

P. A. Budni, L. A. Pomeranz, M. L. Lemons, C. A. Miller, J. R. Mosto, and E. P. Chicklis, "Efficient mid-infrared lasing using 1.9-µm-pumped Ho:YAG and ZnGeP2 optical parametric oscillators," J. Opt. Soc. Am. B 17, 723-727 (2000).
[CrossRef]

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, "High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holium lasers," IEEE J. Sel. Top. Quantum Electron. 6,629-635 (2000).
[CrossRef]

Mackenzie, J. I.

S. So, J. I. Mackenzie, D. P. Shepherd, W. A. Clarkson, J. G. Betterton, and E. K. Gorton, "A power scaling strategy for longitudinally diode-pumped Tm:YLF lasers," Appl. Phys. B 84, 389-393 (2006).
[CrossRef]

Miller, C. A.

Mitzscherlich, P.

T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Spectroscopy and diode laser-pumped operation of Tm,Ho:YAG," IEEE J. Quantum Electron. 24, 924-933 (1988).
[CrossRef]

T. Y. Fan, G. Huber, R. L. Byer, and P. Mitzscherlich, "Continuous-wave operation at 2.1 µm of a diode-laser-pumped, Tm-sensitized Ho:Y3Al5O12 laser at 300 K," Opt. Lett. 12, 678-680 (1987).
[CrossRef] [PubMed]

Mosto, J. R.

P. A. Budni, L. A. Pomeranz, M. L. Lemons, C. A. Miller, J. R. Mosto, and E. P. Chicklis, "Efficient mid-infrared lasing using 1.9-µm-pumped Ho:YAG and ZnGeP2 optical parametric oscillators," J. Opt. Soc. Am. B 17, 723-727 (2000).
[CrossRef]

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, "High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holium lasers," IEEE J. Sel. Top. Quantum Electron. 6,629-635 (2000).
[CrossRef]

Nabors, C. D.

C. D. Nabors, J. Ochoa, T. Y. Fan, A. Sanchez, H. K. Choi, and G. W. Turner, "Ho:YAG laser pumped by 1.9-µm diode lasers," IEEE J. Quantum Electron. 31, 1603-1605 (1995).
[CrossRef]

Nilsson, J.

Y. Jeong, P. Dupriez, J. K. Sahu, J. Nilsson, D. Y. Shen, W. A. Clarkson, and S. D. Jackson, "Power scaling of 2µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975nm," Electron. Lett. 41, 173-174 (2005).
[CrossRef]

Ochoa, J.

C. D. Nabors, J. Ochoa, T. Y. Fan, A. Sanchez, H. K. Choi, and G. W. Turner, "Ho:YAG laser pumped by 1.9-µm diode lasers," IEEE J. Quantum Electron. 31, 1603-1605 (1995).
[CrossRef]

Payne, S. A.

S. A. Payne, L. L. Chase, L. K. Smith, W. L. Kway, and W. F. Krupke, "Infrared cross-section measurements for crystals doped with Er3+, Tm3+, and Ho3+," IEEE J. Quantum Electron. 28, 2619-2630 (1992).
[CrossRef]

Pomeranz, L. A.

Sahu, J. K.

Y. Jeong, P. Dupriez, J. K. Sahu, J. Nilsson, D. Y. Shen, W. A. Clarkson, and S. D. Jackson, "Power scaling of 2µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975nm," Electron. Lett. 41, 173-174 (2005).
[CrossRef]

Sanchez, A.

C. D. Nabors, J. Ochoa, T. Y. Fan, A. Sanchez, H. K. Choi, and G. W. Turner, "Ho:YAG laser pumped by 1.9-µm diode lasers," IEEE J. Quantum Electron. 31, 1603-1605 (1995).
[CrossRef]

Schellhorn, M.

Shen, D. Y.

Y. Jeong, P. Dupriez, J. K. Sahu, J. Nilsson, D. Y. Shen, W. A. Clarkson, and S. D. Jackson, "Power scaling of 2µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975nm," Electron. Lett. 41, 173-174 (2005).
[CrossRef]

Shepherd, D. P.

S. So, J. I. Mackenzie, D. P. Shepherd, W. A. Clarkson, J. G. Betterton, and E. K. Gorton, "A power scaling strategy for longitudinally diode-pumped Tm:YLF lasers," Appl. Phys. B 84, 389-393 (2006).
[CrossRef]

Smith, L. K.

S. A. Payne, L. L. Chase, L. K. Smith, W. L. Kway, and W. F. Krupke, "Infrared cross-section measurements for crystals doped with Er3+, Tm3+, and Ho3+," IEEE J. Quantum Electron. 28, 2619-2630 (1992).
[CrossRef]

So, S.

S. So, J. I. Mackenzie, D. P. Shepherd, W. A. Clarkson, J. G. Betterton, and E. K. Gorton, "A power scaling strategy for longitudinally diode-pumped Tm:YLF lasers," Appl. Phys. B 84, 389-393 (2006).
[CrossRef]

Stoneman, R. C.

Targ, R.

Turner, G. W.

C. D. Nabors, J. Ochoa, T. Y. Fan, A. Sanchez, H. K. Choi, and G. W. Turner, "Ho:YAG laser pumped by 1.9-µm diode lasers," IEEE J. Quantum Electron. 31, 1603-1605 (1995).
[CrossRef]

Unternahrer, J.

J. M. Eggleston, T. J. Kane, K. Khun, J. Unternahrer, and R. L. Byer, "The slab geometry laser - part I: theory," IEEE J. Quantum Electron. 20, 289-301 (1984).
[CrossRef]

Walsh, B. M.

N. P. Barnes, B. M. Walsh, and E. D. Filer, "Ho:Ho upconversion: applications to Ho lasers," J. Opt. Soc. Am. B 20, 1212-1219 (2003).
[CrossRef]

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[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

Schematic diagram of the Ho:YAG intracavity side-pumped laser

Fig. 2.
Fig. 2.

Output power against absorbed pump power for the Tm: YLF laser. The multimode laser mode profile is inset.

Fig. 3.
Fig. 3.

σ-polarized Tm:YLF emission and absorption cross-sections (data extracted from ref.[19]), and Ho:YAG absorption cross-section (data calculated from the measured absorption spectrum of an uncoated slab and the known doping level).

Fig. 4.
Fig. 4.

Intracavity side-pumped Ho:YAG output power against absorbed diode-pump power in the Tm:YLF crystal.

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