基于单模半导体激光二极管抽运的 Yb:KYW 激光的连续波、单谐振腔、内腔光参量振荡器。

Continuous-wave, singly-resonant, intracavity optical parametric oscillator based on a single-mode-laser-diode-pumped Yb:KYW laser.

出版信息

Opt Lett. 2018 Jun 15;43(12):2807-2810. doi: 10.1364/OL.43.002807.

DOI:10.1364/OL.43.002807

Abstract

We report a continuous-wave (cw), intracavity, singly resonant optical parametric oscillator (ICSRO) based on an Yb:KYW laser pumped by a single-mode laser diode (LD). Pumping the ICSRO by a low-noise single-mode LD, combined with the reduced heat generation due to the lower quantum defect of the Yb:KYW laser system, effectively eliminated the onset of relaxation oscillations, which have been a long-standing problem in previous multimode-LD-pumped ICSROs, and resulted in a cw ICSRO being operated free of relaxation oscillations. At an LD power of 515 mW, the generated idler power was 21 mW at ∼3500 nm. To the best of our knowledge, this is the first demonstration of a single-mode-LD-pumped ICSRO.

摘要

我们报告了一种基于掺镱钾钨酸晶体（Yb:KYW）激光器的连续波（cw）腔内单共振光参量振荡器（ICSRO），该激光器由单模激光二极管（LD）泵浦。通过低噪声单模 LD 对 ICSRO 进行泵浦，再加上 Yb:KYW 激光系统因量子亏损较低而产生的热量减少，有效地消除了弛豫振荡的产生，这是先前多模 LD 泵浦 ICSRO 中长期存在的问题，从而实现了无需弛豫振荡的连续波 ICSRO 运行。在 LD 功率为 515 mW 的情况下，在 ∼3500nm 处产生的闲频光功率为 21mW。据我们所知，这是首次演示单模 LD 泵浦的 ICSRO。