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Stable Coherent Coupling of Laser Diodes by a Volume Bragg Grating in PTR Glass

机译:通过PTR玻璃中的体积布拉格光栅实现激光二极管的稳定相干耦合

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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 photo-thermo-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.
机译:25年来,人们一直在深入研究应该提供所有成分相干发射的多通道谐振器。然而,对于这种装置,没有报道稳定高效的相干发射。阻碍稳定有效耦合的主要问题是多通道系统倾向于在复杂谐振器的不同模式之间切换。本文报道了记录在光热折射玻璃中的厚布拉格光栅的使用,该光栅具有极窄的光谱宽度和角度选择性,可提供两个半导体激光二极管的相干耦合。在所描述的结构中,没有观察到输出功率的振荡,并且长时间观察到可见度接近于一的干涉图案。

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