Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
739933 | Optics & Laser Technology | 2006 | 5 Pages |
Abstract
This paper presents a very simple unstable resonator, made of a concave mirror (total reflector) and a bare plane–convex BK7 lens working as a convex coupling mirror, which is quite efficient for HyBrID copper laser. In addition to a good quality factor (M2=4.9)(M2=4.9), experimental results showed that it is possible to control the laser output power by introducing a variable aperture iris inside the cavity, close to the coupling lens, without spoiling beam quality. A rough theoretical model helped to explain these results as a combined effect of unstable resonator plus radial gain distribution.
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Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
Madalena Alice Priante Gião, Walter Miyakawa, Nicolau André Silveira Rodrigues, Denise Maria Zezell, Rudimar Riva, Marcelo Geraldo Destro, Jaime Tsutomu Watanuki, Carlos Schwab,