输出功率比例可调的正交偏振双波长1297纳米和1306纳米钕：镧镁铝11氧化物/钕：锶铝12氧化物激光器

Orthogonally polarized dual-wavelength Nd:LaMgAl11O19/Nd:SrAl12O19 laser at 1297 and 1306 nm with adjustable ratio of output powers.

作者信息

Chu Chu, Yang Xinghua, Li Yuzhao

机构信息

School of Physics and Opto-Electronic Engineering, Harbin Engineering University, Harbin, China.

School of Physics and Astronomy, Yunnan University, Kunming, China.

出版信息

PLoS One. 2025 Sep 4;20(9):e0331770. doi: 10.1371/journal.pone.0331770. eCollection 2025.

DOI:10.1371/journal.pone.0331770

PMID:40906733

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12410712/

Abstract

Using tunable in-band laser diode (LD) pumping (791.1-798.2 nm), an orthogonally polarized dual-wavelength (OPDW) Nd:LaMgAl11O19/Nd:SrAl12O19 (Nd:LMA/Nd:SA) operation at 1297 nm and 1306 nm for the 4F3/2 → 4I13/2 transition is demonstrated for the first time. Optimization of LD temperature and pump focus position enabled efficient generation of both wavelengths at balanced power. The maximum combined continuous-wave (CW) output reached 3.32 W at 1297 nm and 1306 nm with a near 1:1 power ratio. Relative to the absorbed 796.56 nm pump power, the laser achieved maximum total slope efficiency and optical-to-optical conversion efficiency of 20.7% and 18.5%, respectively. This 1297 nm and 1306 nm OPDW source shows significant potential for medical and scientific applications.

摘要

利用可调谐带内激光二极管（LD）泵浦（791.1 - 798.2 nm），首次展示了用于4F3/2→4I13/2跃迁的正交偏振双波长（OPDW）Nd:LaMgAl11O19/Nd:SrAl12O19（Nd:LMA/Nd:SA）在1297 nm和1306 nm处的运转。通过优化LD温度和泵浦聚焦位置，能够以平衡功率高效产生这两个波长。在1297 nm和1306 nm处，最大连续波（CW）组合输出达到3.32 W，功率比接近1:1。相对于吸收的796.56 nm泵浦功率，该激光器实现的最大总斜率效率和光光转换效率分别为20.7%和18.5%。这种1297 nm和1306 nm的OPDW光源在医学和科学应用中显示出巨大潜力。