All-fiber laser with simultaneous Tm3%2b passive Q-switched and Ho3%2b gain-switched operation
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We experimentally demonstrate simultaneous Tm3 passive Q-switched (PQS) and Ho3 gain-switched laser operations at 1888.8 and 2021.2 nm, respectively, in a single-cavity all-fiber laser. The PQS operation of the Tm3 laser is based on the use of a high-concentration holmium-doped fiber as a fiber saturable absorber. Then the Tm3 laser emission is used as a pulsed pump source to achieve Ho3 gain-switched pulses. A high birefringence fiber optical loop mirror used as a spectral filter allows the tuning of both Tm3 and Ho3 laser emissions. © 2018 Optical Society of America
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Birefringence; Fiber lasers; Fibers; Optical pumping; Optical sensors; Pulsed lasers; Q switching; Saturable absorbers; All-fiber lasers; Gain switched operation; High birefringence fibers; Laser emission; Laser operations; Passive Q-switched; Single cavity; Spectral filters; Laser mirrors
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