Abstract

The influence of external cavity length on multimode hopping in microchip Nd:YAG lasers is investigated experimentally. With an optical feedback loop, the threshold gain of different longitudinal modes are all modulated by changing the external cavity length; a λ∕2 change in the external cavity length causes a one-period oscillation. The longitudinal modes can be divided into groups according to different initial threshold gain variations and modulation trends corresponding to different external cavity phases. Because of the initial gain difference, only one mode in each group is the dominant potential lasing mode, while others are suppressed. During the 2π change of the external cavity phase, mode hopping occurs among these potential lasing modes from different groups. Both the intensity waveforms and the number of hopping modes strongly depend on the external cavity length. Experimental results agree well with the theoretical analysis of the phenomenon of multimode hopping subjected to optical feedback in microchip Nd:YAG lasers.

© 2008 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Self-mixing interference effects of microchip Nd:YAG laser with a wave plate in the external cavity

Yidong Tan and Shulian Zhang
Appl. Opt. 46(24) 6064-6068 (2007)

Instability in a laser-diode-pumped microchip Nd:YAG laser in a Π scheme

Kenju Otsuka, Jing-Yuan Ko, Tamaki Kubota, Siao-Lung Hwong, Tsong-Shin Lim, Jyh-Long Chern, Ba An Nguyen, and Paul Mandel
Opt. Lett. 26(14) 1060-1062 (2001)

Self-Q-switched Nd:YVO4 microchip lasers

R. S. Conroy, T. Lake, G. J. Friel, A. J. Kemp, and B. D. Sinclair
Opt. Lett. 23(6) 457-459 (1998)

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 (9)

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

Equations (4)

You do not have subscription access to this journal. Equations 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