掺镱氯铌酸钇晶体的克尔透镜锁模。

Kerr-lens mode-locking of an Yb:CLNGG laser.

出版信息

Opt Express. 2023 Feb 27;31(5):8575-8585. doi: 10.1364/OE.480986.

Abstract

We report on a Kerr-lens mode-locked laser based on an Yb-doped disordered calcium lithium niobium gallium garnet (Yb:CLNGG) crystal. Pumping by a spatially single-mode Yb fiber laser at 976 nm, the Yb:CLNGG laser delivers soliton pulses as short as 31 fs at 1056.8 nm with an average output power of 66 mW and a pulse repetition rate of ∼77.6 MHz via soft-aperture Kerr-lens mode-locking. The maximum output power of the Kerr-lens mode-locked laser amounted to 203 mW for slightly longer pulses of 37 fs at an absorbed pump power of 0.74 W, which corresponds to a peak power of 62.2 kW and an optical efficiency of 20.3%.

摘要

我们报告了一种基于掺镱无序钙锂铌钽石榴石（Yb:CLNGG）晶体的克尔透镜锁模激光器。该激光器采用 976nm 的空间单模掺镱光纤激光器作为泵浦源，通过软光阑克尔透镜锁模，在 1056.8nm 处获得最短为 31fs 的孤子脉冲，平均输出功率为 66mW，脉冲重复率约为 77.6MHz。当吸收泵浦功率为 0.74W 时，克尔透镜锁模激光器的最长脉冲为 37fs，最大输出功率可达 203mW，对应的峰值功率为 62.2kW，光效率为 20.3%。