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Yerevan, Armenia

Kerobyan M.,Spectralus CJSC | Gyulasaryan A.,Spectralus CJSC | Soghomonyan S.,Spectralus CJSC | Gabrielyan G.,Spectralus CJSC | Essaian S.,Spectralus Corporation
Journal of Modern Optics | Year: 2013

A method for measuring parallelism of transparent optical components with small aperture size is described. It uses a Haidinger-type laser interferometer adapted for the measurement of optical components with millimeter and sub-millimeter aperture size. The method is based on the measurement of the optical thickness variation when the plate under test is translated across a focused laser beam. Measurement results for optical parts with 0.8 mm-10 mm aperture size are presented. © 2013 Taylor & Francis. Source


Kerobyan M.,Spectralus CJSC | Kerobyan M.,Armenian National Academy of Sciences | Gyulasaryan A.,Spectralus CJSC | Khachikyan A.,Spectralus CJSC | And 3 more authors.
Optics Communications | Year: 2013

We present a method for the measurement of a residual reflection at the interface between two optically contacted components of microchip laser. The method is based on the analysis of the reflection of a thermally scanned three-mirror Fabry-Perot interferometer (FPI). The microchip laser under test is illuminated with focused beam of a He-Ne laser, and is operated as a scanning interferometer by variation of its temperature. Imperfect optical contact leads to small reflection at the interface, which causes an amplitude modulation of the temperature response of the FPI reflection. The modulation depth is directly related to the reflection of the interface. The reflection coefficient of the interface is found from the measured modulation depth. Measurement results for microchips with sub-millimeter aperture size are presented. Residual reflection of 0.1-0.2% is determined. © 2013 Elsevier B.V. Source


Essaian S.,Spectralus Corporation | Khaydarov J.,Spectralus Corporation | Slavov S.,Spectralus Corporation | Ter-Mikirtychev V.,Spectralus Corporation | And 3 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

We report on progress in development of a miniature, highly efficient, and versatile 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 Nd 3+:YVO 4 allows obtaining a significant increase in the overall efficiency of the green microchip laser in comparison with other compact green laser source architectures with comparable output power. Originally, this laser source was designed to be part of the miniature and efficient RGB light source for microdisplay-based (LCOS, DLP or similar) mobile projector devices. Recently, we have extended range of operations for our original laser platform. In particular, we demonstrate the following: high peak power (>500mW), high average power (>200mW), broad temperature range of operation (-30°C - 60°C), and low noise CW operation (<0.5% RMS). © 2012 SPIE. Source


Khaydarov J.,Spectralus Corporation | Essaian S.,Spectralus Corporation | Slavov S.,Spectralus Corporation | Gabrielyan G.,Spectralus CJSC | And 2 more authors.
SID Conference Record of the International Display Research Conference | Year: 2011

We report on progress in development of the low-cost highly efficient miniature (0.23cm 3) green laser designed for battery powered high-brightness pico-projectors. High power of 360mW with overall wall-plug efficiency (WPE) higher than 14% is demonstrated. Operating in pulsed regime with duty cycle of 33% required for field sequential LCOS- or DLP-based projectors, laser average output is 120mW. Brightness of the pico-projector powered by this laser could be as high as 501m. Source


Essaian S.,Spectralus Corporation | Khaydarov J.,Spectralus Corporation | Slavov S.,Spectralus Corporation | Gabrielyan G.,Spectralus CJSC | And 2 more authors.
Digest of Technical Papers - SID International Symposium | Year: 2011

We report on progress in development of the low-cost highly efficient miniature green laser source for consumer electronics applications such as handheld and pocket projectors. The source is based on the monolithic cavity microchip with highly efficient periodically poled MgO-doped Lithium Niobate as the frequency doubler. This design allows high power output while maintaining small package size. We demonstrate up to 250mW average power output with >13% overall efficiency from the new package with total volume of 0.23cm3. We also demonstrate modulation speed of 2MHz, which, to our knowledge, is the highest, reported for the green microchip laser. © 2011 SID. Source

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