High modal discrimination in a Nd:YAG laser resonator with internal phase gratings.
A unique laser resonator containing an internal phase grating and a diffractive mode-selecting mirror provides high modal discrimination in a Nd:YAG laser cavity. Single-spatial-mode lasers with high Fresnel numbers are possible, with negligible loss to the fundamental mode.
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JR
Leger
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D
Chen
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K
Dai