Abstract

We describe effective suppression of beam divergence for a high-power laser diode bar by use of an external-cavity technique. Nineteen off-axis external-cavity laser diodes of the high-power laser diode are formed by feedback with a stripe mirror. At three times the threshold current, the diverging angle 1/e2 of the external-cavity laser diode bar is reduced to 1.5° from 6.6° (free running) with 14.1-W peak output power and 70.4% of the radiated power of the free-running state without the external cavity. This technique effectively improves the beam quality of the high-power laser diode bar.

© 2004 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Effective bandwidth reduction for a high-power laser-diode array by an external-cavity technique

Yujin Zheng and Hirofumi Kan
Opt. Lett. 30(18) 2424-2426 (2005)

Beam quality improvement of laser diode array by using off-axis external cavity

Su Zhouping, Lou Qihong, Dong Jingxing, Zhou Jun, and Wei Runrong
Opt. Express 15(19) 11776-11780 (2007)

High cw power using an external cavity for spectral beam combining of diode laser-bar emission

Andreas Jechow, Volker Raab, and Ralf Menzel
Appl. Opt. 45(15) 3545-3547 (2006)

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 (4)

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