The lasing properties of an oval-shaped resonant cavity (ORC) with a continuously variable aspect ratio have been studied. The ORC was formed with a dye-doped pendant drop placed inside a variable static electric field. When the drop ORC was pumped by a nitrogen laser, lasing from the ORC was found to have strong directional emission characteristics and an intensity enhancement factor as great as 19.5. Calculated results of light rays escaping from ORC's by refraction are in good agreement with the experimental data.
© 2000 Optical Society of America
(140.2050) Lasers and laser optics : Dye lasers
(140.3410) Lasers and laser optics : Laser resonators
(140.3460) Lasers and laser optics : Lasers
(190.3970) Nonlinear optics : Microparticle nonlinear optics
Xiao-Yun Pu and Wing-Kee Lee, "Lasing characteristics of a pendant drop deformed by an applied electric field," Opt. Lett. 25, 466-468 (2000)