Title :
High spectral purity CO2 laser stabilized using a molecular frequency reference
Author :
Pisani, Marco ; Sassi, Maria Paola ; Zucco, Massimo
Author_Institution :
Istituto di Metrologia G. Colonnetti, CNR, Torino, Italy
fDate :
4/1/1995 12:00:00 AM
Abstract :
A CO2 laser has been frequency stabilized to a molecular absorption line with a bandwidth of 10 kHz, yielding a laser noise spectral density reduction below 1 Hz/√ Hz and a relative accuracy of 10-10. In the time domain, this corresponds to an Allan standard deviation of σ(2, τ)=3·10-14 τ-1/2, for τ>100 μs. This source allows experiments of very high resolution spectroscopy as well as the realization of accurate frequency standards in the 10-μm region
Keywords :
carbon compounds; frequency measurement; gas lasers; laser beam applications; laser frequency stability; laser noise; measurement standards; 10 kHz; 10 mum; 100 mus; Allan standard deviation; CO2; CO2 laser; accurate frequency standards; frequency control; frequency stabilized laser; high resolution spectroscopy; high spectral purity; laser noise; molecular absorption line; molecular frequency reference; relative accuracy; spectral density reduction; time domain; Bandwidth; Discharges; Fluctuations; Frequency measurement; Gas lasers; Laser noise; Laser stability; Noise reduction; Optical control; Power lasers;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
