Research Initiation: Squeezed State Enhanced Frequency Modulation Spectroscopy (ROA Supplement)

本研究的目的是通过实验证明 利用光学压缩态来增强可用的 频率调制光谱学的灵敏度， 化学复杂的气相环境的光学传感探头 这是材料加工反应器中通常遇到的类型。 这样的演示将是第一次使用光学压缩态 在光谱应用中发挥优势， 使用吸收光谱法检测低浓度的 浓度或其他难以检测的分子和自由基 敏感度极高的物种。 压缩态的使用将 降低通常相关的调幅背景电平 利用频率调制光谱学来低于通常的散粒噪声 或量子极限值。

The objective of this research is to demonstrate experimentally the feasibility of using optical squeezed states to enhance the available sensitivity of frequency modulation spectroscopy when used as an optical sensing probe of a chemically complex, gas phase environment of the type commonly encountered in materials processing reactors. Such a demonstration would be the first to use optical squeezed states to advantage in a spectroscopic application and would open up the possibility of using absorption spectroscopy to detect low concentration or otherwise difficult to detect molecular and radical species at very high sensitivity. The use of squeezed states will reduce the amplitude modulated background level normally associated with frequency modulation spectroscopy to below the usual shot noise or quantum limited value.