Chaotic Oscillation in a Microchip Solid-State Laser Array Using a Talbot Mirror

Atsushi UCHIDA  Yoshihide SHIMAMURA  Tetsuya TAKAHASHI  Shigeru YOSHIMORI  Fumihiko KANNARI 

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences  Vol.E84-A  No.9  pp.2165-2172
Publication Date: 2001/09/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Nonlinear Theory and its Applications)
Category: Chaos & Dynamics
Keyword: 
laser array,  synchronization of chaos,  intermittency,  Talbot effect,  injection locking, 

Full Text: PDF(905.7KB)

Summary: 
We have experimentally observed chaotic oscillation of outputs in a diode-pumped Nd:YAG microchip laser array with an external Talbot mirror. The oscillation of chaotic output is observed at frequencies of sub MHz corresponding to the relaxation oscillation frequencies when the Talbot mirror is slightly tilted from the perfect alignment position with the internal cavity. Chaotic intermittent bursts also appear at frequencies of sub kHz due to longitudinal mode hopping. Synchronization of chaos is observed at these two different time scales. The generation of chaotic oscillations at sub MHz is confirmed by using numerical simulations. It is found that synchronized chaotic oscillations can be observed in the vicinity of the boundary of the injection locking range.