A compact frequency-stabilized Nd:YVO4/KTP/I2 laser at 532 nm for laser interferometry and wavelength standards

Leonid F. Vitushkin; Oleg A. Orlov

doi:10.1117/12.611883

13 June 2005 A compact frequency-stabilized Nd:YVO₄/KTP/I₂ laser at 532 nm for laser interferometry and wavelength standards

Leonid F. Vitushkin, Oleg A. Orlov

Author Affiliations +

Proceedings Volume 5856, Optical Measurement Systems for Industrial Inspection IV; (2005) https://doi.org/10.1117/12.611883
Event: Optical Metrology, 2005, Munich, Germany

Abstract

A compact, solid-state, diode-pumped laser at 532 nm stabilized in frequency on one of the electronic transitions R(56) 32-0 of the absorbing molecule ¹²⁷I₂ has been developed and investigated. The active medium is Nd:YVO₄ and a KTP crystal is used for intracavity frequency doubling. Third-harmonic techniques are used for frequency stabilization with an external iodine cell. Electronic units are designed for the power supply, the five temperature control systems of the laser elements and of the iodine cell finger, and that of servo electronics for frequency stabilization. The frequency stability in terms of an Allan variance is 2×10^-12, 1×10^-13 and 3.1×10^-14 at the time intervals of 0.1 s, 10 s and 100 s, respectively. The laser output power at 532 nm is greater than 4 mW. Such lasers will find wide application in laser displacement interferometry, in laser interferometers for absolute gravimeters and in laser spectroscopy. These lasers can also be used as portable secondary wavelength (frequency) standards at 532 nm.

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Leonid F. Vitushkin and Oleg A. Orlov "A compact frequency-stabilized Nd:YVO₄/KTP/I₂ laser at 532 nm for laser interferometry and wavelength standards", Proc. SPIE 5856, Optical Measurement Systems for Industrial Inspection IV, (13 June 2005); https://doi.org/10.1117/12.611883

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