Simultaneous Raman spectra measurement using power build-up cavity (PBC)

Shinobu Ohara; Takashi Oketani; Masamori Endo; Shigeru Yamaguchi; Kenzo Nanri; Tomoo Fujioka

doi:10.1117/12.462655

16 April 2002 Simultaneous Raman spectra measurement using power build-up cavity (PBC)

Shinobu Ohara, Takashi Oketani, Masamori Endo, Shigeru Yamaguchi, Kenzo Nanri, Tomoo Fujioka

Proceedings Volume 4648, Test and Measurement Applications of Optoelectronic Devices; (2002) https://doi.org/10.1117/12.462655
Event: Symposium on Integrated Optoelectronic Devices, 2002, San Jose, California, United States

Abstract

Raman spectroscopy using a simple external Power Build-up Cavity (PBC) pumped with a diode laser was demonstrated. The PBC is very simple configuration consisted of anti- reflection coated low power (10mW, (lambda) equals670nm) laser diode, Graded index (GRIN) lens, and extremely high finesse external cavity, where the beam intensity can reaches up to 100W intracavity beam. Such a high finesse external cavity could optimized parameter attribute to high spectral brightness mostly suitable for a compact Raman light source without any sophisticated temperature and/or current injection control. PBC pumped Raman spectrum was measured by an optical fiber coupled optical multi-channel analyzer (OMA). The Raman signal from intracavity beam was imaged on the optical fiber by two focusing lenses (fequals38mm, 50mm) located in perpendicular to the optical axis. Stokes Raman spectra of N₂ and O₂ of gas mixture were simultaneously measured with real time operation, approximately.

Citation Download Citation

Shinobu Ohara, Takashi Oketani, Masamori Endo, Shigeru Yamaguchi, Kenzo Nanri, and Tomoo Fujioka "Simultaneous Raman spectra measurement using power build-up cavity (PBC)", Proc. SPIE 4648, Test and Measurement Applications of Optoelectronic Devices, (16 April 2002); https://doi.org/10.1117/12.462655

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