Two Optical Feedback Schemes for Cavity Ring-down Technique for High Reflectivity Measurements

Autor:	Li Bin-Cheng, Han Yan-Ling, QU Zhe-Chao, Zhao Tong-Kai
Rok vydání:	2010
Předmět:	Physics Distributed feedback laser business.industry General Physics and Astronomy Resonance Laser law.invention Wavelength Amplitude Optics law Optical cavity Continuous wave business Diode
Zdroj:	Chinese Physics Letters. 27:100701
ISSN:	1741-3540 0256-307X
Popis:	An optical feedback cavity ring-down (OF-CRD) technique employing a continuous wave Fabry-Perot (F-P) diode laser is investigated for high reflectivity measurement. Two optical feedback (OF) schemes (linear and V-shaped cavity schemes) for the OF-CRD technique are compared in both wavelength and time domains. Due to the OF effect caused by retro-reflection of ring-down cavity back into the laser cavity, large resonance peaks appear in CRD signals in both the schemes. However, due to the differences in the strengths and spectra of the OF, the appearance frequencies and amplitudes of the peaks in the CRD signals in both schemes differ significantly. Simple and low-cost high reflectivity measurement apparatuses are established based on these two OF-CRD schemes and high-accuracy measurements of high reflectivity are experimentally achieved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bf3988a58d5c74f5bdc1ff7c1dd7fc42 https://doi.org/10.1088/0256-307x/27/10/100701 Zobrazit plný text záznamu