Abstract
We report a laser spectroscopy technique for detecting optical absorption in gases and micro-objects via linked thermal effects and by using a sharp mechanical resonance in a quartz crystal. The performance of this technique is studied using near-IR diode lasers and two gases, pure and diluted in nitrogen. A noise equivalent sensitivity to absorption in gases is demonstrated. Based on experimental results, it was estimated that fractional absorption of optical radiation by a micro-object deposited on a thin transparent fiber can be detected.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
Vincenzo Spagnolo, Pietro Patimisco, Simone Borri, Gaetano Scamarcio, Bruce E. Bernacki, and Jason Kriesel
Opt. Lett. 37(21) 4461-4463 (2012)
Lei Dong, Vincenzo Spagnolo, Rafał Lewicki, and Frank K. Tittel
Opt. Express 19(24) 24037-24045 (2011)
Yufei Ma, Yao Tong, Ying He, Xingang Jin, and Frank K. Tittel
Opt. Express 27(6) 9302-9312 (2019)