Femtosecond pulse stretching fiber oscillator
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United States of America Patent
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Oct 3, 2023
Grant Date -
May 12, 2022
app pub date -
Jan 24, 2022
filing date -
Jun 25, 2019
priority date (Note) -
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Abstract
A pulse stretching fiber oscillator (or laser cavity) may comprise a chirped fiber Bragg grating (CFBG) and an optical circulator arranged such that a first portion of a beam that is transmitted through the CFBG continues to propagate through the laser cavity while a second portion of the beam that is reflected from the CFBG is stretched and chirped by the CFBG and directed out of the laser cavity by the optical circulator. Accordingly, a configuration of the CFBG and the optical circulator in the laser cavity may enable pulse stretching contemporaneous with outcoupling, which may prevent deleterious nonlinear phase from accumulating prior to stretching.
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