Self-Pulsed Nanosecond 2.7- $mu ext{m}$ Solid-State Erbium Laser by Cooperatively Enhanced Reabsorption

Self-Pulsed Nanosecond 2.7- $mu ext{m}$ Solid-State Erbium Laser by Cooperatively Enhanced Reabsorption

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The nanosecond self-pulsing operation of a midinfrared solid-state laser with no additional passive absorbers is reported in this paper.A proof-of-principle demonstration of the cooperatively enhanced reabsorption method, in which two laserdiode-pumped erbium gain media share the same laser resonator, is proposed.The two excited Trimmers media act cooperatively to enhance the reabsorption effect and amplify the generated HydroRite / HydraPure Parts signal pulses.Under the pump power of 3.8 W, pulses with a pulse repetition rate of 6.

2 kHz, an average output power of 107 mW, and a single pulsewidth of 185 ns are obtained.