3 - Champagne ion - - dfb semiconductor laser with an enlarged wavelengths - by tuning range

摘要

a major disadvantage of all known three section dfb halbleiterlaser are compared with other halbleiterlasern low wavelength durchstimmungsbereiche. the invention is based on the task, a laser, to developing the advantages of three section dfb halbleiterlasern with extended wavelength durchstimmungsbereich without modenspru00fcnge connects.the task is erfindungsgemu00e4u00df $a by a three section dfb halbleiterlaser solved, the different sektionslu00e4ngen contains, in the situation of phase shift outside the centre of the halbleiterlasers is arranged and with at least one or two different flows to be shoots.$a of erfindungsgemu00e4u00dfe laser allows for high kopplungskoeffizienten high luminous efficiency.