Femtosecond laser oscillator with double zigzag laser resonators
A technology of laser resonator and femtosecond laser, which is applied to lasers, laser parts, phonon exciters, etc., can solve the problems of very high accuracy requirements of the detector system, the decrease of laser output power, and the complexity of the circuit system, etc., to achieve Large tolerable misalignment angle, simple structure and debugging, and the effect of large cavity arm length variation
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[0029] In this embodiment, the concave surfaces of the first concave mirror 3, the second concave mirror 4, the third concave mirror 5, and the fourth concave mirror 6 are all coated with a high-reflection dielectric film for 1020-1100nm light in the gain laser and a A high-transmittance medium film for 800-1000nm light in the pump light, the other surfaces of the first concave mirror 3, the second concave mirror 4, the third concave mirror 5, and the fourth concave mirror 6 are all coated with Highly transparent dielectric film for 800-1000nm light. In order to precisely control the positions of the four concave mirrors, the four concave mirrors are placed on an optical translation stage.
[0030] One side of the coupling output mirror 11 adjacent to the resonant cavity is coated with a dielectric film with a transmittance of 1.5% for 1040±20nm light in the gain laser, and the other side is coated with an anti-reflection dielectric film for 1040±20nm light in the gain laser. ...
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