Step tuning semiconductor laser with complex external cavity
Title：
Step tuning semiconductor laser with complex external cavity
Application Number：
 02123921
Application Date：
 2002/07/10
Announcement Date：
 2003/01/15
Pub. Date：
Publication Number：
 1391322
Announcement Number：
 1182636
Grant Date：
 2004-12-29
Granted Pub. Date：
 2004-12-29
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H01S 5/14
Applicant(s)：
 Tsinghua Univ
Inventor(s)：
 Wu Keying, Zhang Hanyi
Key Words：
 Step tuning, semiconductor laser, complex external cavity
Abstract：
 A semiconductor laser with step tuning and composite external cavity features that the collimation lens and planar reflector are arranged at both sides of semiconductor laser chip. Its planar reflector is composed of fixed and movable reflectors, so forming the composite laser resonator with dual external cavities. Moving planar reflector along axle can sequentially coincide the longitudinal modes with different orders of two external cavities, so realizing step tuning of single-mode output laser frequency. Its advantages are with turning range and more channels (up to tens).
Claim：
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