Continuous Wave Intracavity Optical Parametric Oscillator using Second Harmonic Generation Noise Suppression.

使用二次谐波生成噪声抑制的连续波内腔光学参量振荡器。

• 批准号: 130897
• 金额: $ 3.14万
• 依托单位: M-SQUARED LASERS LIMITED
• 依托单位国家: 英国
• 项目类别: Feasibility Studies
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=130897
• 关键词: Continuous; Wave; Intracavity; Optical; Parametric

A compact continuous wave (cw) optical parametric oscillator (OPO)capable of tuning over key absorption features in the infrared is a desirable tool for spectroscopy of key atmospheric pollutants, narcotics and explosives. A system that can combine broad tuneability with narrow linewidth allows probing of diverse substances with precision. M Squared Lasers already manufacture a pulsed (broad linewidth) OPO which is a compact, broadly tunable source and combines this with their imager to produce hyperspectral images. The challenge is to produce narrow linewidth by making a cw OPO. The inherent difficult is relaxation oscillations, which occur in the interplay between the OPO and the laser when they share a common resonator. We propose an internal SHG unit to suppress this.

紧凑型连续波(CW)光学参量振荡器(OPO)能够调节红外的主要吸收特性，是研究主要大气污染物、毒品和爆炸物光谱的理想工具。可以将宽可调性与窄线宽相结合的系统允许精确地探测不同的物质。M Squared激光器已经制造了一种脉冲(宽线宽)OPO，这是一种紧凑的、可广泛调谐的光源，并将其与成像器相结合来产生高光谱图像。挑战是通过制作CW OPO来产生窄线宽。固有的困难是弛豫振荡，当OPO和激光器共用一个共振腔时，它会在OPO和激光器之间的相互作用中发生。我们提出了一个内部倍频单元来抑制这一点。