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Updated: Jun 21, 2025
Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
Study on Bottom Distributed Bragg Reflector Radius and Electric Aperture Radius on Performance Characteristics of
Dominika Dąbrówka1, Robert P Sarzała1
1Institute of Physics, Lodz University of Technology, 217/221 Wólczańska St., 93-005 Łódź, Poland.
Abstract:
This article presents the results of a numerical analysis of a nitride-based vertical-cavity surface-emitting laser (VCSEL). The analyzed laser features an upper mirror composed of a monolithic high-contrast grating (MHCG) and a dielectric bottom mirror made of SiO2 and Ta2O5 materials. The emitter was designed for light emission at a wavelength of 403 nm. We analyze the influence of the size of the dielectric bottom mirrors on the operation of the laser, including its power-current-voltage (LIV) characteristics. We also study the effect of changing the electrical aperture radius (active area dimensions). We demonstrate that the appropriate selection of these two parameters enables the temperature inside the laser to be reduced, lowering the laser threshold current and increasing its optical power output significantly.
