Title :
High-frequency modulation transfer technique for ultra-high resolution spectroscopy of I2
Author :
du Burck, F. ; Wallerand, J.-P. ; Goncharov, A.N. ; Himbert, M.
Author_Institution :
Lab. de Phys. des Lasers, Univ. de Paris-Nord, Villetaneuse, France
fDate :
4/1/2001 12:00:00 AM
Abstract :
Linewidths only limited by the transit time and by collisions are obtained in stimulated Raman and Rayleigh spectroscopy by a second-harmonic detection in high-frequency modulation transfer. The distortion of the line shape due to a residual amplitude modulation is shown to vanish for a third- or a fourth-harmonic detection with a proper choice of the modulation index and the detection phase
Keywords :
Raman spectroscopy; Rayleigh scattering; frequency modulation; hyperfine structure; iodine; optical modulation; spectral line breadth; I2; detection phase; fourth-harmonic detection; high-frequency modulation transfer; high-frequency modulation transfer technique; line shape; modulation index; residual amplitude modulation; second-harmonic detection; stimulated Raman and Rayleigh spectroscopy; third-harmonic detection; ultra-high resolution spectroscopy; Amplitude modulation; Frequency; Laser beams; Laser transitions; Optical modulation; Phase detection; Raman scattering; Resonance; Shape; Spectroscopy;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
