Abstract

Intracavity optical damage is mitigated in a pulsed Ho:YAG laser cavity using the coherent polarization locking (CPL) technique. By splitting the available pump power into two individual Ho:YAG laser rods, we passively coherently locked two orthogonal polarization lasers with 9.13 mJ output pulse energies and 14 ns pulsewidths, and operating at 800 Hz repetition rate. A conventional Ho:YAG laser cavity with the same pump and cavity configuration results in severe optical damage when operating at <2kHz repetition rate, thus limiting the output pulse energies to <5mJ. We also demonstrated, to the best of our knowledge, the first pulsed operation within the entire CPL Ho:YAG laser cavity by Q-switching in one of the polarization arms, producing nanosecond pulses with no sign of pulse instability.

© 2013 Optical Society of America

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References

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2012

2011

2008

M. Eichhorn, Appl. Phys. B 93, 269 (2008).
[CrossRef]

2007

2006

2005

T. Y. Fan, IEEE J. Sel. Top. Quantum Electron. 11, 567 (2005).
[CrossRef]

2002

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, M. Vampouille, and A. Barthelemy, Appl. Phys. B 75, 503 (2002).
[CrossRef]

Baker, J. T.

Barthelemy, A.

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, M. Vampouille, and A. Barthelemy, Appl. Phys. B 75, 503 (2002).
[CrossRef]

Benham, V.

Chua, C. F.

Culpepper, M. A.

Desfarges-Berthelemot, A.

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, M. Vampouille, and A. Barthelemy, Appl. Phys. B 75, 503 (2002).
[CrossRef]

Eichhorn, M.

M. Eichhorn, Appl. Phys. B 93, 269 (2008).
[CrossRef]

Fan, T. Y.

T. Y. Fan, IEEE J. Sel. Top. Quantum Electron. 11, 567 (2005).
[CrossRef]

Kermene, V.

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, M. Vampouille, and A. Barthelemy, Appl. Phys. B 75, 503 (2002).
[CrossRef]

Kewitsch, A.

Liang, W.

Lim, Y. L.

Lu, C. A.

Nelson, D. J.

Phua, P. B.

Pilkington, D.

Purnawirman,

Rakuljic, G.

Sabourdy, D.

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, M. Vampouille, and A. Barthelemy, Appl. Phys. B 75, 503 (2002).
[CrossRef]

Sanchez, A. D.

Shay, T. M.

Spring, J.

Tan, L. H.

Vampouille, M.

D. Sabourdy, V. Kermene, A. Desfarges-Berthelemot, M. Vampouille, and A. Barthelemy, Appl. Phys. B 75, 503 (2002).
[CrossRef]

Ward, B.

Yariv, A.

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Figures (4)

Fig. 1.
Fig. 1.

Schematic setup of CPL Q-switched Ho:YAG laser. HWP, half-wave plate; TFP, thin-film polarizer; FM, folding mirror; DM, dichroic mirror; RM, rear mirror; OC, output coupler; PC, Pockels cell; P1, position 1 for PC; P2, position 2 for PC.

Fig. 2.
Fig. 2.

Pulse energy/pulsewidth versus pulse repetition rate for CPL Q-switched Ho:YAG laser with the Pockels cell placed at P1.

Fig. 3.
Fig. 3.

M2 measurement of CPL Q-switched Ho:YAG laser at the highest pulse energy. The inset shows the laser-output far-field beam profile.

Fig. 4.
Fig. 4.

Pulse energy/Pulsewidth versus pulse repetition rate for CPL Q-switched Ho:YAG laser with the Pockels cell placed at P2

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