Abstract

Optical triggering via direct bleaching of a Cr:YAG saturable absorber was applied to a monolithic Nd:YAG/Cr:YAG laser crystal. The method uses a single laser diode bar to bleach a thin sheet within the saturable absorber from a direction orthogonal to the lasing axis. By placing the Q-switch at the time corresponding to the steepest slope (dT/dt) for change in transmission during bleaching, the pulse-to-pulse timing jitter showed a 13.2× reduction in standard deviation, from 132ns for free-running operation to 10ns with optical triggering. We measured that a fluence of 60kW/cm2 was sufficient to enable optical triggering, where a diode appropriately sized for the length of the Cr:YAG (3mm) would then require only 150W of optical power over a 12μs duration to enable effective jitter reduction. Additionally, we measured an increase in optical-to-optical efficiency with optical triggering, where the efficiency improved from 12% to 13.5%.

© 2009 Optical Society of America

Full Article  |  PDF Article
Related Articles
56-ps passively Q-switched diode-pumped microchip laser

B. Braun, F. X. Kärtner, G. Zhang, M. Moser, and U. Keller
Opt. Lett. 22(6) 381-383 (1997)

Passively Q-switched Nd:YVO4 laser with a Cr4+:YAG crystal saturable absorber

Yingxin Bai, Nianle Wu, Jian Zhang, Jiaqiang Li, Shiqun Li, Jun Xu, and Peizhen Deng
Appl. Opt. 36(12) 2468-2472 (1997)

Numerical study of passive Q switching of a tunable alexandrite laser with a Cr:Y2SiO5 solid-state saturable absorber

Yen-Kuang Kuo, Horng-Min Chen, and Yuni Chang
Appl. Opt. 40(9) 1362-1368 (2001)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (12)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription