MECSEL with dynamic transverse mode control

D. Gailevicius; Gabrielius Kontenis; Victor Taranenko; Kestutis Staliunas

doi:10.1117/12.3002793

12 March 2024 MECSEL with dynamic transverse mode control

D. Gailevicius, Gabrielius Kontenis, Victor Taranenko, Kestutis Staliunas

Proceedings Volume 12868, Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII; 1286804 (2024) https://doi.org/10.1117/12.3002793
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

The phenomenon of Laue diffraction is known in crystallography. Conceptually, its optics resemble coherent forward scattering by a periodic refractive index structure. It has been shown that compact and efficient spatial filters within short solid-state laser cavities can be made utilizing the Laue diffraction approach. While manufacturing spatial filters based on Laue diffraction proves to be comparatively simpler than those relying on Bragg diffraction, challenges persist due to the typically three-dimensional nature of these structures. To simplify the implementation of such spatial filters, we present a new approach. We propose a new type of spatial filter based on the complex refractive index, namely an amplification grating built into a relatively short surface-emitting laser cavity with a semiconductor membrane external-cavity surface-emitting laser. This represents a very special case where we achieve this goal by self-imaging inside the resonator, creating a virtual photonic crystal spatial filter that increases the brightness of the output laser beam. The simplicity and effectiveness of this approach are thoroughly validated in our paper.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

D. Gailevicius, Gabrielius Kontenis, Victor Taranenko, and Kestutis Staliunas "MECSEL with dynamic transverse mode control", Proc. SPIE 12868, Vertical External Cavity Surface Emitting Lasers (VECSELs) XIII, 1286804 (12 March 2024); https://doi.org/10.1117/12.3002793

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