532nm Lasers (Optical Communications)

532nm laser is used for underwater communication. Because the low loss window in seawater is 0.46nm~0.54nm, and the pulse peak energy should be greater than 200mJ, the pulse width is generally 10ns~20ns, the repetition frequency is about 50Hz, and the divergence angle is the smaller the better, generally less than 0.1mrad, the laser spot is as uniform as possible, and the 532nm Nd:YAG laser with electro-optic Q-switching can be applied to these aspects.

532nm laser Optical Communication

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