Low-threshold, 12-MHz, multipass-cavity femtosecond Cr 4+ : Forsterite laser (original) (raw)

Laser Phys, 2009

Abstract

Abstract We report on the development of an extended-cavity, low-threshold femtosecond Cr 4+: forsterite laser operating near 1270 nm. The resonator was end-pumped by a continuous-wave Yb-fiber laser at 1060 nm. The 195-MHz short cavity could be operated with absorbed threshold pump powers as low as about 300 mW. To scale up the pulse energy, the cavity length was increased by using a q-preserving multipass cavity (MPC) consisting of a flat and a curved (R= 4 m), notched high-reflector. Kerr-lens mode locking was used to generate ...

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