Laser device and method for operating laser device
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United States of America
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Mar 11, 2025
Grant Date -
Mar 31, 2022
app pub date -
Sep 29, 2021
filing date -
Sep 29, 2021
priority date (Note) -
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Abstract
A laser device includes: a traveling wave type resonator comprising a first mirror and a second mirror; and a laser medium disposed between the first mirror and the second mirror. The first mirror and the second mirror are disposed such that round-trip light that travels in round trips in the resonator has a focus inside the laser medium. The laser device is configured such that: excitation light incident on the resonator is superimposed on the round-trip light at the focus and narrowed to be thinner than the round-trip light, ZR×α<0.5 is satisfied, where ZR is a Rayleigh length of the excitation light and α is an absorption coefficient of the laser medium with respect to the excitation light, and a round-trip Gouy phase shift of the resonator has a value excluding 2π×n/m where m is an integer of less than 15 and n is an integer of equal to or less than m.
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