Title :
Sub-ppb detection of trace gas species with a high-power diode-pumped cw difference-frequency sensor
Author :
Lancaster, D.G. ; Rehle, D. ; Leleux, D.
Author_Institution :
Rice Quantum Inst., Rice Univ., Houston, TX, USA
Abstract :
Summary form only given. To increase the difference-frequency power produced in an optical trace gas sensor we have developed an architecture based on two frequency-stable diode lasers at 1.1 and 1.5 /spl mu/m, which are amplified by high-power Yb and Er-doped fiber amplifiers, respectively. To date we have generated up to 0.7 mW of narrow-band (<60 MHz) mid-infrared radiation.
Keywords :
air pollution measurement; atmospheric techniques; gas sensors; infrared spectroscopy; laser frequency stability; measurement by laser beam; optical frequency conversion; optical pumping; optical sensors; semiconductor lasers; spectrochemical analysis; 1.1 mum; 1.5 mum; Er-doped fiber amplifiers; difference-frequency power; frequency-stable diode lasers; high-power Yb-doped fiber amplifiers; high-power diode-pumped cw difference-frequency sensor; narrow-band mid-IR radiation generation; optical trace gas sensor; trace gas species; Air pollution; Carbon dioxide; Diode lasers; Fiber lasers; Frequency; Gas detectors; Gases; Lenses; Power lasers; Sensitivity and specificity;
Conference_Titel :
Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-634-6
DOI :
10.1109/CLEO.2000.907328
