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Proceedings Paper

Modulation and efficiency characteristics of miniature microchip green laser sources based on PPMgOLN nonlinear material
Author(s): John Khaydarov; Stepan Essaian; Andrei Shchegrov; Slav Slavov; Gevorg Gabrielyan; Armen Poghosyan; Suren Soghomonyan
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Paper Abstract

We report on highly efficient diode-pumped solid-state (DPSS) green laser source based on a monolithic cavity microchip laser platform. The use of periodically poled MgO-doped Lithium Niobate (PPMgOLN) as the nonlinear frequency doubler together with gain material Nd3+:YVO4 allows obtaining a significant increase in the overall efficiency of green microchip laser in comparison with other compact green laser source architectures with comparable output power. We discuss our progress in miniaturization and efficient operation across a wide range of temperatures and application-specific modulation conditions. In particular, we demonstrate 50mW-120mW average green output power (30% duty cycle) with wall-plug efficiency over 13%. Efficient laser operation with duty cycle ranging from 10% to 60% in a wide range of repetition rates is also demonstrated. The laser is designed to be a part of the miniature and efficient RGB light source for microdisplay-based (LCOS, DLP or similar) mobile projector devices. While these projection architectures typically require modulation rates from 60Hz to about 2000Hz depending on design, we extended modulation speed up to 2MHz that can be of interest for other applications. A very efficient and small microchip as well as alignment-free design allow us to package this laser source into the very small volume of only 0.23cm3 (bounding box). We present results of performance tests for this packaged laser and demonstrate that such a miniature package can support laser operation with average power output of over 250mW.

Paper Details

Date Published: 21 February 2011
PDF: 8 pages
Proc. SPIE 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X, 791705 (21 February 2011); doi: 10.1117/12.875772
Show Author Affiliations
John Khaydarov, Spectralus Corp. (United States)
Stepan Essaian, Spectralus Corp. (United States)
Andrei Shchegrov, Spectralus Corp. (United States)
Slav Slavov, Spectralus Corp. (United States)
Gevorg Gabrielyan, Spectralus CJSC (Armenia)
Armen Poghosyan, Spectralus CJSC (Armenia)
Suren Soghomonyan, Spectralus CJSC (Armenia)

Published in SPIE Proceedings Vol. 7917:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X
Konstantin L. Vodopyanov, Editor(s)

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