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Title: Frequency modulation upon nonstationary heating of the p - n junction in high-sensitive diode laser spectroscopy

Abstract

A special type of modulation of the injection current of a diode laser is proposed at which the frequency modulation of radiation is not accompanied by the residual amplitude modulation. This method considerably reduces the influence of the diode laser radiation instability on the recorded absorption spectra. This allows a prolonged monitoring of small amounts of impurities in gas analysis by retaining a high sensitivity. Prolonged measurements of absorption spectra are performed at a relative absorption of 8x10{sup -7}. By using a 50-cm multipass cell with the optical length of 90 m, the absorption coefficient of 1.2x10{sup -10} cm{sup -1} was detected. As an example, the day evolution of the background concentrations of NO{sub 2} molecules was measured in the atmosphere. (laser applications and other topics in quantum electronics)

Authors:
; ; ; ; ;  [1]
  1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
21466655
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 37; Journal Issue: 4; Other Information: DOI: 10.1070/QE2007v037n04ABEH013311
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; ABSORPTION SPECTRA; AMPLITUDES; BEAM CURRENTS; DIODE-PUMPED SOLID STATE LASERS; FREQUENCY MODULATION; GAS ANALYSIS; HEATING; INSTABILITY; LASER RADIATION; LASER SPECTROSCOPY; MOLECULES; NITROGEN DIOXIDE; P-N JUNCTIONS; SENSITIVITY; CHALCOGENIDES; CURRENTS; ELECTROMAGNETIC RADIATION; LASERS; MODULATION; NITROGEN COMPOUNDS; NITROGEN OXIDES; OXIDES; OXYGEN COMPOUNDS; RADIATIONS; SEMICONDUCTOR JUNCTIONS; SOLID STATE LASERS; SORPTION; SPECTRA; SPECTROSCOPY

Citation Formats

Andreev, Sergei N, Nikolaev, I V, Ochkin, Vladimir N, Savinov, Sergei Yu, Spiridonov, Maksim V, and Tskhai, Sergei N. Frequency modulation upon nonstationary heating of the p - n junction in high-sensitive diode laser spectroscopy. United States: N. p., 2007. Web. doi:10.1070/QE2007V037N04ABEH013311.
Andreev, Sergei N, Nikolaev, I V, Ochkin, Vladimir N, Savinov, Sergei Yu, Spiridonov, Maksim V, & Tskhai, Sergei N. Frequency modulation upon nonstationary heating of the p - n junction in high-sensitive diode laser spectroscopy. United States. doi:10.1070/QE2007V037N04ABEH013311.
Andreev, Sergei N, Nikolaev, I V, Ochkin, Vladimir N, Savinov, Sergei Yu, Spiridonov, Maksim V, and Tskhai, Sergei N. Mon . "Frequency modulation upon nonstationary heating of the p - n junction in high-sensitive diode laser spectroscopy". United States. doi:10.1070/QE2007V037N04ABEH013311.
@article{osti_21466655,
title = {Frequency modulation upon nonstationary heating of the p - n junction in high-sensitive diode laser spectroscopy},
author = {Andreev, Sergei N and Nikolaev, I V and Ochkin, Vladimir N and Savinov, Sergei Yu and Spiridonov, Maksim V and Tskhai, Sergei N},
abstractNote = {A special type of modulation of the injection current of a diode laser is proposed at which the frequency modulation of radiation is not accompanied by the residual amplitude modulation. This method considerably reduces the influence of the diode laser radiation instability on the recorded absorption spectra. This allows a prolonged monitoring of small amounts of impurities in gas analysis by retaining a high sensitivity. Prolonged measurements of absorption spectra are performed at a relative absorption of 8x10{sup -7}. By using a 50-cm multipass cell with the optical length of 90 m, the absorption coefficient of 1.2x10{sup -10} cm{sup -1} was detected. As an example, the day evolution of the background concentrations of NO{sub 2} molecules was measured in the atmosphere. (laser applications and other topics in quantum electronics)},
doi = {10.1070/QE2007V037N04ABEH013311},
journal = {Quantum Electronics (Woodbury, N.Y.)},
number = 4,
volume = 37,
place = {United States},
year = {Mon Apr 30 00:00:00 EDT 2007},
month = {Mon Apr 30 00:00:00 EDT 2007}
}