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Proceedings Paper

Ultra-narrow band diode lasers with arbitrary pulse shape modulation (Conference Presentation)
Author(s): Aleksandr I. Ryasnyanskiy; Vadim Smirnov; Oleksiy Mokhun; Alexei L. Glebov; Leon B. Glebov

Paper Abstract

Wideband emission spectra of laser diode bars (several nanometers) can be largely narrowed by the usage of thick volume Bragg gratings (VBGs) recorded in photo-thermo-refractive glass. Such narrowband systems, with GHz-wide emission spectra, found broad applications for Diode Pumped Alkali vapor Lasers, optically pumped rare gas metastable lasers, Spin Exchange Optical Pumping, atom cooling, etc.

Although the majority of current applications of narrow line diode lasers require CW operation, there are a variety of fields where operation in a different pulse mode regime is necessary. Commercial electric pulse generators can provide arbitrary current pulse profiles (sinusoidal, rectangular, triangular and their combinations). The pulse duration and repetition rate however, have an influence on the laser diode temperature, and therefore, the emitting wavelength. Thus, a detailed analysis is needed to understand the correspondence between the optical pulse profiles from a diode laser and the current pulse profiles; how the pulse profile and duty cycle affects the laser performance (e.g. the wavelength stability, signal to noise ratio, power stability etc.). We present the results of detailed studies of the narrowband laser diode performance operating in different temporal regimes with arbitrary pulse profiles. The developed narrowband (16 pm) tunable laser systems at 795 nm are capable of operating in different pulse regimes while keeping the linewidth, wavelength, and signal-to-noise ratio (>20 dB) similar to the corresponding CW modules.

Paper Details

Date Published: 21 April 2017
PDF: 1 pages
Proc. SPIE 10085, Components and Packaging for Laser Systems III, 100850H (21 April 2017);
Show Author Affiliations
Aleksandr I. Ryasnyanskiy, OptiGrate Corp. (United States)
Vadim Smirnov, OptiGrate Corp. (United States)
Oleksiy Mokhun, OptiGrate Corp. (United States)
Alexei L. Glebov, OptiGrate Corp. (United States)
Leon B. Glebov, OptiGrate Corp (United States)

Published in SPIE Proceedings Vol. 10085:
Components and Packaging for Laser Systems III
Alexei L. Glebov; Paul O. Leisher, Editor(s)

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