Q-switched Er-Yb Research Articles

Compact Narrow Linewidth Actively Q-Switched Er–Yb Double-Clad Fiber Laser

Actively Q-switched laser operation of a narrow linewidth compact fiber laser based on an Er–Yb double-clad fiber is presented. The laser linewidth as a function of the repetition rate and the Q-switched pulses characteristics for different pump powers are experimentally analyzed. Stable Q-switched laser operation with spectral laser linewidth of 73 pm in a repetition rate range from 90 to 270 kHz is obtained. The minimum pulse duration of 178 ns, maximum peak power of 30.5 W, and maximum pulse energy of 5.4 µJ are observed. The maximum average power reached is 1.1 W.

Passive Q switching of Er-Yb fiber laser with semiconductor saturable absorber

A high-performance AlGaInAs quantum-well saturable absorber is developed for passively Q-switched Er-Yb double-clad fiber lasers at 1560 nm. With an incident pump power of 13.5 W, an average output power of 1.26 W with a pulse repetition rate of 12 kHz is obtained. The maximum peak power is greater than 500 W.

Q-switching of an Er–Yb:glass microchip laser using an acousto-optical modulator

Abstract We present a compact Q-switched Er–Yb:glass microchip laser operating at the wavelength of 1.535 μm using an acousto-optical modulator. A Q-switched peak power of 325 W with a pulse-duration of 38 ns and a pulse-to-pulse jitter of less then 10 ns was achieved. Well-controlled pulses were obtained for repetition rates up to 10 kHz while the maximum pulse energy was 12 μJ. The experimental results are compared with theoretical analysis, which shows how to optimize the laser as well as fundamental limitations.