Inventor
KAJIMURA TAKASHI
JP32 patents
Patents
32 patentsUS4961197AOct 2, 1990
Semiconductor laser device
HITACHI LTD77 citations96
US4503540AMar 5, 1985
Phase-locked semiconductor laser device
HITACHI LTD58 citations96
US4337443AJun 29, 1982
Semiconductor laser device with facet passivation film
HITACHI LTD53 citations96
US4599729AJul 8, 1986
Semiconductor laser device having facets provided with dielectric layers
HITACHI LTD28 citations92
US4369513AJan 18, 1983
Semiconductor laser device
HITACHI LTD32 citations92
US4176325ANov 27, 1979
Semiconductor laser device
HITACHI LTD34 citations91
US4432091AFeb 14, 1984
Semiconductor laser device
HITACHI LTD20 citations82
US4881235ANov 14, 1989
Semiconductor laser having a multiple quantum well structure doped with impurities
HITACHI LTD21 citations81
US4740976AApr 26, 1988
Semiconductor laser device
HITACHI LTD22 citations80
US4783425ANov 8, 1988
Fabrication process of semiconductor lasers
HITACHI LTD7 citations74
US4752933AJun 21, 1988
Semiconductor laser
HITACHI LTD6 citations74
US4752934AJun 21, 1988
Multi quantum well laser with parallel injection
HITACHI LTD13 citations74
US4602371AJul 22, 1986
High output semiconductor laser device utilizing a mesa-stripe optical confinement region
HITACHI LTD11 citations74
US4509173AApr 2, 1985
Phase-locked semiconductor laser device
HITACHI LTD14 citations74
US5157679AOct 20, 1992
Optoelectronic devices
HITACHI LTD15 citations73
US5136601AAug 4, 1992
Semiconductor laser
HITACHI LTD8 citations73
US4630279ADec 16, 1986
Buried heterojunction laser
HITACHI LTD11 citations73
US4426703AJan 17, 1984
Semiconductor laser device
HITACHI LTD7 citations73
US4288757ASep 8, 1981
Semiconductor laser device
HITACHI LTD17 citations73
US5300793AApr 5, 1994
Hetero crystalline structure and semiconductor device using it
HITACHI LTD16 citations72
US4881238ANov 14, 1989
Semiconductor laser having quantum well active region doped with impurities
HITACHI LTD17 citations72
US4841531AJun 20, 1989
Semiconductor laser device
HITACHI LTD13 citations72
US4827483AMay 2, 1989
Semiconductor laser device and method of fabricating the same
HITACHI LTD19 citations72
US4811354AMar 7, 1989
Semiconductor laser
HITACHI LTD8 citations72
US4800565AJan 24, 1989
Semiconductor laser device having high optical intensity and reliability
HITACHI LTD9 citations72
US4794606ADec 27, 1988
Opto-electronic device
HITACHI LTD13 citations72
US4780879AOct 25, 1988
Semiconductor laser device having little astigmatism
HITACHI LTD14 citations72
US5042046AAug 20, 1991
Semiconductor laser device
HITACHI LTD6 citations62
US4872175AOct 3, 1989
Semiconductor laser device having a lens-like refractive index distribution within the stripe
HITACHI LTD5 citations62
US4797891AJan 10, 1989
Semiconductor laser
HITACHI LTD6 citations62
US4563764AJan 7, 1986
Semiconductor laser device
HITACHI LTD3 citations62
US4821275AApr 11, 1989
Laser diode
HITACHI LTD1 citations52