Patent ID: 7602821
Filing Date: 2009-10-13
Classification: H01S

Abstract:
1. Device for generating laser radiation in infrared band II and/or in infrared band III comprising: —at least one diode able to emit a first laser radiation at a wavelength, —at least one current pulse generator able to generate current pulses at an adjustable repetition rate, —means for supplying the current pulses to the diode, —amplification means for amplifying the first laser radiation at the first wavelength emitted by the diode, and—shifting means able to shift the wavelength of the amplified radiation amplified by the amplification means into a second laser radiation wavelength in infrared band II or in infrared band III, wherein: the at least one diode is able to emit a first laser radiation at a wavelength in the 1.8-2.1 μm range, —the amplification means comprises at least one fiber doped with an ion having laser activity in the diode emission range, and—the shitting means is constituted by a Raman medium which comprises at least one gas medium, and the Raman medium is able to convert the wavelength of the amplified radiation into the second laser radiation wavelength in the infrared band II and/or the infrared band III.