Wavelength Locking of Laser Emitters | Simulation Experiments

Wavelength locking of single emitters and multi-emitter modules: Simulation & Experiments

Wavelength-stabilized high-brightness single emitters are commonly used in fiber-coupled laser diode modules for pumping Yb-doped lasers at 976 nm, and Nd-doped ones at 808 nm. We investigate the spectral behavior of single emitters under wavelength-selective feedback from a volume Bragg (or hologram) grating (VBG) in a multi-emitter module. By integrating a full VBG model as a multi-layer thin film structure with commercial raytracing software, we simulated wavelength locking conditions as a function of beam divergence and angular alignment tolerances. Good correlation between the simulated VBG feedback strength and experimentally measured locking ranges, in both VBG misalignment angle and laser temperature,...

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Dan Yanson
Noam Rappaport
Ophir Peleg
Yuri Berk
Nir Dahan
Genady Klumel
Ilya Baskin
Moshe Levy

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Wavelength locking of single emitters and multi-emitter modules: Simulation & Experiments

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