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Proceedings Paper

Simultaneous Raman spectra measurement using power build-up cavity (PBC)
Author(s): Shinobu Ohara; Takashi Oketani; Masamori Endo; Shigeru Yamaguchi; Kenzo Nanri; Tomoo Fujioka
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Paper 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.

Paper Details

Date Published: 16 April 2002
PDF: 6 pages
Proc. SPIE 4648, Test and Measurement Applications of Optoelectronic Devices, (16 April 2002); doi: 10.1117/12.462655
Show Author Affiliations
Shinobu Ohara, Tokai Univ. (Japan)
Takashi Oketani, Tokai Univ. (Japan)
Masamori Endo, Tokai Univ. (Japan)
Shigeru Yamaguchi, Tokai Univ. (Japan)
Kenzo Nanri, Tokai Univ. (Japan)
Tomoo Fujioka, Tokai Univ. (Japan)

Published in SPIE Proceedings Vol. 4648:
Test and Measurement Applications of Optoelectronic Devices
Niloy K. Dutta; Aland K. Chin; Robert W. Herrick; Niloy K. Dutta; Robert W. Herrick; Kurt J. Linden; Daniel J. McGraw, Editor(s)

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