概括
研究人员从随机拉曼光纤激光器 (RRFL) 中产生了可调节的蓝光,距离500nm以下. 这种波长灵活,低相干的蓝光具有混乱的激光雷达和幽灵成像应用的潜力.
科学领域:
- 非线性光学是一种非线性光学.
- 激光物理学的激光物理学
- 光子学是指光子学的使用方法.
背景情况:
- 随机光纤激光器提供波长灵活性和低时间连贯性.
- 通过非线性频率转换产生可见光对于各种应用至关重要.
- 之前的努力未能从随机光纤激光器中产生500nm以下的蓝光.
研究的目的:
- 为了证明波长调节的蓝光生成在500nm以下.
- 使用随机拉曼光纤激光器 (RRFL) 的频率三倍化.
- 探索混沌激光雷达和时间幽灵成像中的应用.
主要方法:
- 使用瓦特级,窄带随机拉曼光纤激光器 (RRFL),在1412-1435.5nm之间发射.
- 使用两个级联周期极化酸 (PPLN) 晶体进行频率转换.
- 实现第二生成 (SHG) 和总频生成 (SFG) 过程的组合.
主要成果:
- 实现了蓝光生成,光谱调范围从470.6nm到478.7nm.
- 通过随机光纤激光器的频率转换证明了第一个在500nm以下的可见光生成.
- 在生成的蓝光中确认了无关的时间强度波动.
结论:
- 高功率可调RRFL的频率三倍化为产生波长灵活,暂时混乱的蓝光提供了一个新的平台.
- 生成的蓝光适用于水下激光雷达,显示器和传感器的应用.
- 这项工作为在可见光生成中使用随机光纤激光器开辟了新的途径.
相关概念视频
01:26Raman Spectroscopy Instrumentation: Overview
275
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...
275
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...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
292