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Highly efficient second, third and fourth harmonic generation from a two- branch femtosecond erbium fiber source

2006; Optica Publishing Group; Volume: 14; Issue: 5 Linguagem: Inglês

10.1364/oe.14.001905

1094-4087

Konstantinos Moutzouris, F. Sotier, Florian Adler, Alfred Leitenstorfer,

Photorefractive and Nonlinear Optics

We report on highly efficient second, third and fourth harmonic generation from a femtosecond erbium-doped fiber source operating at 98 MHz repetition rate. By use of quasi-phase-matching in fan-out poled MgO:LiNbO(3), we generate pulses at 770 nm, 520 nm and 390 nm, with corresponding average powers of 120 mW, 55 mW and 6 mW, respectively. Our device can be employed as a two-color source providing radiation from ultraviolet to near infrared.