An external cavity laser comprises a laser source, a collimation optical element, a blazed diffraction grating, a transform optical element, and a light modulator. The laser source produces a light output comprising a range of light wavelengths. The collimation optical element couples the laser source...http://www.google.fr/patents/US6829258?utm_source=gb-gplus-shareBrevet US6829258 - Rapidly tunable external cavity laser
