Stable coherent coupling of laser diodes by a volume Bragg grating in PTR glass

George B. Venus; Armen Sevian; Vadim I. Smirnov; Leonid B. Glebov

doi:10.1117/12.659906

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15 February 2006 Stable coherent coupling of laser diodes by a volume Bragg grating in PTR glass

George B. Venus, Armen Sevian, Vadim I. Smirnov, Leonid B. Glebov

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Proceedings Volume 6104, High-Power Diode Laser Technology and Applications IV; 61040S (2006) https://doi.org/10.1117/12.659906
Event: Lasers and Applications in Science and Engineering, 2006, San Jose, California, United States

Abstract

Multichannel resonators which should provide coherent emission of all its components are intensively studied for more than 25 years. However, no stable coherent emission with high efficiency was reported for such devices. The main problem preventing stable efficient coupling is a tendency of a multichannel system to switch between different modes of a complex resonator. This paper reports the use of thick Bragg grating recorded in a photothermo-refractive glass with an extremely narrow spectral width and angle selectivity that provided coherent coupling of two semiconductor laser diodes. In a described construction no oscillations of output power was observed and an interference patter with visibility close to unity was observed for a long time.

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George B. Venus, Armen Sevian, Vadim I. Smirnov, and Leonid B. Glebov "Stable coherent coupling of laser diodes by a volume Bragg grating in PTR glass", Proc. SPIE 6104, High-Power Diode Laser Technology and Applications IV, 61040S (15 February 2006); https://doi.org/10.1117/12.659906

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