Passive Q-switching of a Tm:YLF laser with a Co 2+ doped silver halide saturable absorber
Source abstract
Abstract
Abstract We report a successful passive Q-switching of a Tm:YLF laser operating at λ = 1.9 μm, using a Co2+:AgCl0.5Br0.5 saturable absorber. Approximately 200-ns long, 150 μJ pulses were obtained. Increase in pump energy resulted in repetitive pulsing, with a repetition rate approximately proportional to the pump pulse energy. Room-temperature optical transmission saturation curves measured in ∼1-mm thick Co2+:AgCl0.5Br0.5 plates yielded a ground state absorption cross section σ g s = ( 7.8 ± 0.5 ) × 10 − 18 c m 2 , and an excited state absorption cross section σ e s = ( 3.3 ± 0.3 ) × 10 − 18 c m 2 , at λ = 1.9 μm. The lifetime of the A2(4F) second excited-state of the octahedral O symmetry was τ ∗ = ( 0.6 ± 0.06 ) n s .
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Research context
OpenAlex topics: Solid State Laser Technologies · Advanced Fiber Laser Technologies · Laser-Matter Interactions and Applications
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References (30)
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