Share Email Print

Proceedings Paper

A compact DIAL hygrometer employing paired powerful laser diodes of 0.85-0.9um wavelengths
Author(s): S. Penchev; V. Pencheva; S. Naboko
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

The spectral range of 0.85 - 0.9μm wavelengths utilized by laser diode (LD) technology contains a relatively intensive spectrum of third rovibrational overtone of the water molecule, pure of interfering spectra of the other major atmospheric gases. We developed a spectroscopic application of pulsed 100W LDs generally limited by their broad, multimode laser line. In fact, their powerful laser radiation propagating in the atmosphere is modulated significantly by multiple resonance absorption lines. The magnitude of the integral absorption pattern is assessed combining theoretical and experimental calibration and using HITRAN database. The resultant absorption spectrum is found to be unsaturated, providing a great dynamic range of measurement of atmospheric humidity within 15% random error of lidar returns ranging to 2km. The reported DIAL technique which utilizes the advantage of direct detection of the lidar profiles and simple operation is prospective for the framework of atmospheric and climatic monitoring.

Paper Details

Date Published: 5 January 2017
PDF: 7 pages
Proc. SPIE 10226, 19th International Conference and School on Quantum Electronics: Laser Physics and Applications, 1022611 (5 January 2017); doi: 10.1117/12.2262567
Show Author Affiliations
S. Penchev, Institute of Electronics (Bulgaria)
V. Pencheva, Institute of Electronics (Bulgaria)
S. Naboko, Institute of Electronics (Bulgaria)

Published in SPIE Proceedings Vol. 10226:
19th International Conference and School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Sanka Gateva; Albena Daskalova; Alexandros Serafetinides, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?