Phase locking of a two-element laser array

Jingwen Xu; Shiqun Li; Kotik Kei Lee; Ying-Chih Chen

doi:10.1117/12.144108

11 May 1993 Phase locking of a two-element laser array

Jingwen Xu, Shiqun Li, Kotik Kei Lee, Ying-Chih Chen

Proceedings Volume 1979, 1992 International Conference on Lasers and Optoelectronics; (1993) https://doi.org/10.1117/12.144108
Event: 1992 International Conference on Lasers and Optoelectronics, 1992, Bejing, China

Abstract

The dynamics of a two-element nonlinear-coupled laser array are briefly reviewed. It is pointed out that if the pump of the laser array reduces to zero for a time period shorter than the population decay time, then the system reduces to two coupled equations for the relative intensity and relative phase. It is well-known from the Poincare-Bendixson theorem that such an autonomous system of dimension two (without detuning) cannot exhibit chaos. By creating two evanescent-coupled lasers in a Nd:YAG etalon using diode end-pumping, the coupling strength between the two laser elements in the array can be continuously varied by adjusting the position of the pumping beams. This allows the observation of the phase locking process over a wide range of coupling strength. We have found that the locking is as fast as the on-set of lasing without undergoing a transition state as along as the coupling is strong enough to ensure such locking. The instantaneous locking is also independent of the coupling strength once the coupling is strong enough to ensure phase locking. New interpretation of phase locking process for a phase locked laser array is provided.

Citation Download Citation

Jingwen Xu, Shiqun Li, Kotik Kei Lee, and Ying-Chih Chen "Phase locking of a two-element laser array", Proc. SPIE 1979, 1992 International Conference on Lasers and Optoelectronics, (11 May 1993); https://doi.org/10.1117/12.144108

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available