Tunable Ultraviolet Vertically-emitting Organic Laser

Sebastien Forget (1) , Hadi Rabbani-Haghighi (1) , Nordine Diffalah (1) , Alain Siove (1) , Sebastien Chenais (1)

1 LPL - Laboratoire de Physique des Lasers

A solid-state organic thin-film laser with intracavity frequency doubling is reported. Tunable ultraviolet emission from 309 to 322 nm is achieved from a vertical external cavity surface-emitting organic laser, with 2 % efficiency (1 µJ at 315 nm). The laser comprises a polymethyl(methacrylate) layer doped with Rhodamine 640, spun-cast onto a plane mirror, a remote concave mirror, a nonlinear crystal and a dichroic separator. The output is spectrally narrow (<0.5 nm FWHM) and tunable through phase-matching selection of the fundamental radiation lasing modes. These results highlight a low-cost and portable alternative to tunable UV laser sources, useful for spectroscopic applications.

Mots clés: laser; VECSEL; organic; UV; tunability

Domaines: Optique [physics.optics]

Sebastien Forget, Hadi Rabbani-Haghighi, Nordine Diffalah, Alain Siove, Sebastien Chenais. Tunable Ultraviolet Vertically-emitting Organic Laser. Applied Physics Letters, 2011, 98, pp.131102. ⟨hal-00574714⟩