Wavelength continuously adjustable comes to an agreement single longitudinal mode semiconductor laser

The utility model provides a wavelength continuously adjustable comes to an agreement single longitudinal mode semiconductor laser. This semiconductor laser inserts four parts on the longitudinal modecompression grating and the output of grating angle modulation modeling by electroluminescence core branch, intracavity light beam shaping section, resonant cavity subtotal intracavity and constitutes. This laser instrument can provide necessary assay level CIE standard light source for application such as spectral analysis, optical measurements, composition analysis. The single longitudinal modelaser of the arbitrary wavelength of exportable 630~640nm scope of single longitudinal mode semiconductor laser that this wavelength continuously adjustable came to an agreement, the longitudinal mode live width all is less than 300kHz, but the output wavelength is the output of a certain center wavelength 0.5nm scope continuous tuning in the 630~640nm who selects, is wavelength tuning stepping precision at 0.1nm~10 arbit