Title :
Amplitude noise and linewidth reduction of an Ar+ laser
Author :
Bisi, Marco ; Bertinetto, Fabrizio
Author_Institution :
Ist. di Metrol., Torino, Italy
fDate :
4/1/1997 12:00:00 AM
Abstract :
Frequency modulation spectroscopy is used to frequency stabilize an Ar+ laser at 515 nm with respect to a commercial passive cavity. Two transducers, a slow and a fast one, are used. The fast transducer is also used to perform amplitude stabilization of a laser beam. Measured amplitude and frequency spectral noise densities are reported. A simplified scheme of the circuitry used to reduce amplitude noise is shown. Noise characteristics of the realized system are adequate to perform spectroscopy of hyperfine-structure transitions of molecular iodine
Keywords :
argon; frequency measurement; frequency modulation; gas lasers; iodine; laser beam applications; laser frequency stability; laser mode locking; measurement standards; modulation spectroscopy; optical modulation; 0.1 Hz to 100 kHz; 515 nm; Ar; Ar+ laser; I2; amplitude noise; commercial passive cavity; frequency modulation spectroscopy; frequency noise; frequency spectral noise densities; hyperfine-structure transitions; linewidth reduction; molecular iodine; optical frequency standard; stabilisation; Argon; Circuit noise; Frequency modulation; Laser noise; Laser stability; Laser transitions; Noise level; Noise reduction; Spectroscopy; Transducers;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
