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Proceedings Paper

Toward a 1.54 um frequency standard with Er-Yb (13C2H2)
Author(s): Gianluca Galzerano; Cesare Svelto; Atsushi Onae; Elio Bava
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Paper Abstract

A novel Er-Yb:glass quasi-monolithic diode-pumped laser has been developed to realize a high-accuracy frequency standard at 1.54 micrometer based on saturated absorption of isotopic acetylene. This compact oscillator shows low amplitude- and frequency-noise, wide wavelength tunability (approximately 20 nm), and continuous output power in excess of 20 mW with excellent linear polarization (approximately 30 dB extinction ratio). Employing this laser source sub-Doppler spectroscopy of the acetylene around 1.54 micrometer has been performed. To obtain the necessary saturation intensity (approximately 3.5 W/mm2), the absorbing sample is placed inside a Fabry- Perot cavity with a Finesse of approximately 150. The dispersion signal of the sub-Doppler resonance, useful to stabilize the laser frequency, has been obtained by dithering the Fabry-Perot piezo and employing a lock-in detection scheme.

Paper Details

Date Published: 3 May 2001
PDF: 8 pages
Proc. SPIE 4269, Laser Frequency Stabilization, Standards, Measurement, and Applications, (3 May 2001); doi: 10.1117/12.424475
Show Author Affiliations
Gianluca Galzerano, Politecnico di Milano and INFM (Italy)
Cesare Svelto, Politecnico di Milano and INFM (Italy)
Atsushi Onae, National Research Lab. of Metrology (Japan)
Elio Bava, Politecnico di Milano and INFM (Italy)

Published in SPIE Proceedings Vol. 4269:
Laser Frequency Stabilization, Standards, Measurement, and Applications
John L. Hall; Jun Ye, Editor(s)

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