相关实验视频
Updated: Jul 4, 2025
10:17
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
11.5K
概括
研究人员开发了一种高功率,对眼睛安全的水晶拉曼激光. 这种新的激光系统实现了10瓦级输出,为高级应用提供双波长操作.
科学领域:
- 光学和光子学 在光学和光子学.
- 激光物理 激光物理
- 非线性光学是非线性光学.
背景情况:
- 高功率激光器对于各种应用至关重要,但眼睛安全仍然是一个重大问题.
- 晶体拉曼激光器具有产生特定波长的潜力,但同时实现高功率和眼睛安全是具有挑战性的.
研究的目的:
- 为了展示第一个10瓦级的眼睛安全的内腔晶体拉曼激光器.
- 为了实现高效,高功率,双波长的眼睛安全的拉曼激光操作.
主要方法:
- 在KGW (KAlGe4O12) 拉曼晶体中使用声光Q开关1314nm Nd:YLF激光器进行内腔抽取.
- 利用KGW晶体的双轴特性,通过旋转晶体来实现双波长操作.
主要成果:
- 在1461/1645nm和1490/1721nm实现了两套眼睛安全的双波长拉曼激光器.
- 获得的最大第一斯托克斯输出功率为7.9 W (1461 nm) 和8.2 W (1490 nm),第二斯托克斯输出功率为1.4 W (1645 nm) 和1.5 W (1721 nm).
- 眼睛安全的双波长输出功率达到了9.3W和9.7W,脉冲持续时间在3.6至5.5ns之间,近乎偏光限制的光束质量 (M2 <1.6).
结论:
- 成功演示了一种10瓦级的眼睛安全的内腔晶体拉曼激光.
- 开发的激光系统在眼睛安全的光谱区域提供高效,高功率,双波长输出.
- 这一进步为需要高功率,眼睛安全的激光源的应用提供了新的可能性.
相关概念视频
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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
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01:20Raman Spectroscopy: Overview
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The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
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