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Active mode locking in an yttrium erbium aluminum garnet crystal laser ( λ = 2.94 μ )

1982; IOP Publishing; Volume: 12; Issue: 5 Linguagem: Inglês

10.1070/qe1982v012n05abeh012366

2169-530X

K. L. Vodopyanov, L. A. Kulevskiǐ, A A Malyutin, П. П. Пашинин, A. M. Prokhorov,

Photorefractive and Nonlinear Optics

A constant-temperature yttrium erbium aluminum garnet crystal laser was actively mode locked by resonant modulation of the resonator losses using a lithium niobate electrooptic modulator with Brewster faces without any polarizers. This gave a modulation depth 2.6 times greater than that for a modulator with an ideal polarizer. A spike energy of ~1 mJ was obtained with an estimated duration of 200 psec in the 1.7 mm diameter TEM00 mode. The laser radiation was elliptically polarized. It was found that three-micron radiation could be recorded using an SNF-T photomultiplier.