Fishing – trapping – and vermin destroying
Patent
1994-03-17
1995-11-28
Picardat, Kevin M.
Fishing, trapping, and vermin destroying
437133, 437905, 148DIG95, H01L 2120
Patent
active
054707862
ABSTRACT:
A semiconductor laser device comprising a semiconductor substrate, a multi-layered double heterostructure having active layers, a pair of cladding layers, a ridged waveguide structure and a current confining structure formed between the semiconductor substrate and the active layer. With such an arrangement, injected current is narrowed not only on the side above the ridge of the active layer but also on the substrate side of the active layer to improve the threshold current and its current confinement performance. When the two lateral trenches of the ridge are embedded with resin layers, the ridge stripe width can be made narrow to improve the threshold current of the device. When the active layer is realized in a DCC structure having two active layers and having an intermediary clad layer sandwiched therebetween, the device will show a low threshold current circular beam divergence and stabilized thermal characteristics.
REFERENCES:
patent: 4416011 (1983-11-01), Olsen
patent: 4426700 (1984-01-01), Hirao et al.
patent: 4480331 (1984-10-01), Thompson
patent: 4484332 (1984-11-01), Hawrylo
patent: 4496403 (1985-01-01), Turley
patent: 4660208 (1987-04-01), Johnston, Jr.
patent: 4870468 (1989-09-01), Kinoshita et al.
patent: 4888624 (1989-12-01), Johnston, Jr.
patent: 4946802 (1990-08-01), Shima et al.
patent: 4963507 (1990-10-01), Amann et al.
patent: 5045500 (1991-09-01), Mitsui et al.
patent: 5111471 (1992-05-01), Hattori
patent: 5138625 (1992-08-01), Paoli et al.
patent: 5208183 (1993-05-01), Chen et al.
patent: 5214662 (1993-05-01), Irikawa et al.
Irikawa Michinori
Iwase Masayuki
Picardat Kevin M.
The Furukawa Electric Co. Ltd.
LandOfFree
Semiconductor laser device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semiconductor laser device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor laser device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2013288