A laser device comprises a non-collinear optical parametric generator (OPG) and a pump wave source (4). The OPG comprises a non-linear crystal (1) fixedly mounted within the generator wherein the relative orientations of the pump wave (3) and each generated wave (5) to an optic axis (2) of the non-linear crystal (1) are substantially such that a point of inflexion is produced in a tuning curve of wavelength versus pump wave orientation of one of the generated waves, such that a broadband spectral output is obtained. This device has many applications including an amplifier for an input seed wave in which the crystal does not have to be rotated to match the wavelength of the seed wave; or as part of a continuously tuneable narrowband source. Other applications are in spectral analysis and coherence tomography.
申请公布号
CA2260962(A1)
申请公布日期
1998.01.22
申请号
CA19972260962
申请日期
1997.06.26
申请人
THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
发明人
WANG, JIAN;DAWBER, WILLIAM;DUNN, MALCOLM HARRY;RAE, CAMERON FRANCIS