26-05-2023 дата публикации
Номер: CN116169549A
Принадлежит:
The invention discloses a novel nonlinear amplification loop mirror mode-locked laser based on phase bias, and the laser combines the effect of a nonlinear amplification loop mirror and the phase accumulation effect of a wave plate, and achieves the generation of ultrashort pulses. The structure of the laser device can be divided into two parts, one part is a linear space module, and the other part is an NALM module. Under the combined action of nonlinear phase shift accumulated by the NALM module and linear phase difference generated by the one-eighth wave plate of the space module, a periodic function of which the transmittance is incident light power P is finally obtained, a saturable absorption-like effect is realized, a mode locking effect is finally achieved, and stable, easy-to-lock, easy-to-start and high-repetition-frequency ultrashort pulse output can be realized. The method has obvious advantages in the application fields of laser processing, imaging, communication and the like ...
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