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Proceedings Paper

Single-frequency, fully integrated, miniature DPSS laser based on monolithic resonator
Author(s): G. Dudzik; J. Sotor; K. Krzempek; G. Soboń; K. M. Abramski
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Paper Abstract

We present a single frequency, stable, narrow linewidth, miniature laser sources operating at 532 nm (or 1064 nm) based on a monolithic resonators. Such resonators utilize birefringent filters formed by YVO4 beam displacer and KTP or YVO4 crystals to force single frequency operation at 532 nm or 1064 nm, respectively. In both configurations Nd:YVO4 gain crystal is used. The resonators dimensions are 1x1x10.5 mm3 and 1x1x8.5 mm3 for green and infrared configurations, respectively. Presented laser devices, with total dimensions of 40x52x120 mm3, are fully equipped with driving electronics, pump diode, optical and mechanical components. The highly integrated (36x15x65 mm3) low noise driving electronics with implemented digital PID controller was designed. It provides pump current and resonator temperature stability of ±30 μA@650 mA and ±0,003ºC, respectively. The laser parameters can be set and monitored via the USB interface by external application. The developed laser construction is universal. Hence, the other wavelengths can be obtained only by replacing the monolithic resonator. The optical output powers in single frequency regime was at the level of 42 mW@532 nm and 0.5 W@1064 nm with the long-term fluctuations of ±0.85 %. The linewidth and the passive frequency stability under the free running conditions were Δν < 100 kHz and 3⋅10-9@1 s integration time, respectively. The total electrical power supply consumption of laser module was only 4 W. Presented compact, single frequency laser operating at 532 nm and 1064 nm may be used as an excellent source for laser vibrometry, interferometry or seed laser for fiber amplifiers.

Paper Details

Date Published: 28 February 2014
PDF: 8 pages
Proc. SPIE 8959, Solid State Lasers XXIII: Technology and Devices, 89591F (28 February 2014); doi: 10.1117/12.2038518
Show Author Affiliations
G. Dudzik, Wroclaw Univ. of Technology (Poland)
J. Sotor, Wroclaw Univ. of Technology (Poland)
K. Krzempek, Wroclaw Univ. of Technology (Poland)
G. Soboń, Wroclaw Univ. of Technology (Poland)
K. M. Abramski, Wroclaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 8959:
Solid State Lasers XXIII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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