An external cavity laser apparatus and method wherein wavelength or channel selection is carried independently from adjustment of external cavity optical path length. The apparatus comprises a wavelength or channel selector tuner and an external cavity tuner, wherein the wavelength tuner is uncoupled...http://www.google.de/patents/US6901088?utm_source=gb-gplus-sharePatent US6901088 - External cavity laser apparatus with orthogonal tuning of laser wavelength and cavity optical pathlength