Optimization of frequency modulation transfer spectroscopy on the calcium 41S0 to 41P1 transition

• Published in: Applied physics. B, Lasers and optics Vol. 88; no. 4; pp. 563 - 568
• Main Authors: EBLE, J. F, SCHMIDT-KALER, F
• Format: Journal Article
• Language: English
• Published: Berlin Springer 01.09.2007
• Subjects: Atomic and molecular physics; Atomic properties and interactions with photons; Biological and medical applications; Calcium; Error signals; Exact sciences and technology; Frequency modulation; Fundamental areas of phenomenology (including applications); Infrared, submillimeter wave, microwave and radiowave instruments, equipment and techniques; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Intensities and shapes of atomic spectral lines; Laser spectroscopy; Lasers; Line shape; Line shapes, widths, and shifts; Mathematical models; Measurements common to several branches of physics and astronomy; Metrology, measurements and laboratory procedures; Optics; Optimization; Physics; Spectroscopy; Time and frequency; Energy-level transitions; Frequency modulation; Line shape; Optimization method; Laser spectroscopy; Laser frequency stability; Calcium Atoms; Frequency measurement; Experimental study; Modulation spectroscopy
• DOI: 10.1007/s00340-007-2744-1
• ISSN: 0946-2171

We present experimental results of frequency modulation transfer spectroscopy in a vapor of neutral atomic calcium. The observed line shapes agree well with the theoretical model. We use numerical calculations in order to improve the signal shape such that its magnitude and its slope at the zero-crossing is maximized. When optimized this way, the frequency modulation transfer signal can be used for the sensitive optical detection of rare species or isotopes, Doppler-free frequency measurements or as a sensitive error signal for laser frequency stabilization.