The use of vertical-cavity surface-emitting lasers (VCSEL’s) for optical detection of atmospheric oxygen is described. The VCSEL’s were custom designed for single-mode emission in the 763-nm wavelength range, with low noise and narrow optical linewidth. Using standard wavelength modulation spectroscopy and a second-harmonic detection scheme with a 1-m air path, we determined an oxygen concentration resolution of 0.2%. Because of its small size, low power dissipation, and good tunability characteristics, the VCSEL promises to be an attractive light source for use in compact, low-cost optical sensor microsystems for trace gas detection.
© 2000 Optical Society of AmericaFull Article | PDF Article
David Christian Hovde and Craig A. Parsons
Appl. Opt. 36(6) 1135-1138 (1997)
Daniel B. Oh and Alan C. Stanton
Appl. Opt. 36(15) 3294-3297 (1997)
Hejie Li, Gregory B. Rieker, Xiang Liu, Jay B. Jeffries, and Ronald K. Hanson
Appl. Opt. 45(5) 1052-1061 (2006)