Title :
Experimental characterization of FM spectroscopy of 127I 2 at 532 nm using a frequency-doubled Nd:YAG laser
Author :
Galzerano, G. ; Svelto, C. ; Ceriani, P. ; Re, L. ; Bertinetto, F. ; Bava, E.
Author_Institution :
Dipt. di Elettronica e Inf., Politecnico di Milano, Italy
Abstract :
Deals with the experimental characterization of the frequency modulation spectroscopy method by means of a frequency-doubled Nd:YAG laser and saturated absorptions of 127I2 at the wavelength of 532 nm. A power of 8.7 mW at 532 nm with a continuous frequency tuning range of 80 GHz has been obtained by doubling 80 mW of the infrared Nd:YAG radiation incident on a self made external cavity doubler. In order to obtain a high degree of stability and reproducibility of the 532 nm radiation locked to a saturated absorption of 127I2, linewidth, sensitivity, and signal to noise ratio of the demodulated signals have been characterized for different phase modulation conditions, iodine vapor pressures and for different optical power levels
Keywords :
demodulation; frequency modulation; frequency standards; iodine; laser frequency stability; modulation spectra; modulation spectroscopy; neodymium; optical modulation; optical saturable absorption; optical variables measurement; phase modulation; sensitivity; solid lasers; visible spectra; visible spectroscopy; 532 nm; 8.7 mW; 80 GHz; 80 mW; 127I2; FM spectroscopy; I2; YAG:Nd; YAl5O12:Nd; continuous frequency tuning range; demodulated signals; doubling; frequency modulation spectroscopy method; frequency-doubled Nd:YAG laser; infrared radiation; linewidth; optical power levels; phase modulation conditions; reproducibility; saturated absorption; saturated absorptions; self made external cavity doubler; sensitivity; signal to noise ratio; stability; Electromagnetic wave absorption; Frequency modulation; Laser tuning; Optical modulation; Optical noise; Phase modulation; Reproducibility of results; Signal to noise ratio; Spectroscopy; Stability;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.841408
