Title :
Wavelength modulation in tunable diode laser photoacoustic spectroscopy
Author :
Saarela, J. ; Toivonen, J. ; Manninen, A. ; Sorvajärvi, T. ; Hernberg, R.
Author_Institution :
Dept. of Phys., Tampere Univ. of Technol., Tampere, Finland
Abstract :
Wavelength modulation waveforms were studied in tunable diode laser photoacoustic spectroscopy by way of simulations and experiments. The modulation waveforms were sinusoidal, triangular, shaped, and quasi-square waves. The quasi-square waveform gave the largest signal-to-noise ratio.
Keywords :
laser tuning; optical modulation; photoacoustic spectroscopy; semiconductor lasers; quasisquare waveform; sinusoidal waveform; triangular waveform; tunable diode laser photoacoustic spectroscopy; wavelength modulation; Diode lasers; Germanium; Optical devices; Optical filters; Optical interconnections; Optical modulation; Physics; Silicon; Spectroscopy; Tunable circuits and devices; 300.6260; 300.6380; 300.6430;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
