Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2005-02-15
2005-02-15
Wong, Don (Department: 2821)
Coherent light generators
Particular active media
Semiconductor
C372S044010, C372S045013, C372S046012
Reexamination Certificate
active
06856635
ABSTRACT:
A lower multilayer reflection film (2), a light emitting layer forming portion (6) and an upper multilayer reflection film (8) are sequentially formed on a substrate (1) to form a semiconductor laminated portion (9), and a current injection region A is formed at a part of the semiconductor laminated portion so as to emit light from the surface in the center thereof. And, according to the present invention, the current injection region A is formed so as to be deflected from a center of the substrate. As a result, there is provided a surface light emitting type semiconductor laser capable of monitoring a light emitting power correctly and controlling it automatically in order to achieve the constant light emitting power in a case where the surface light emitting type laser chip is used as a light source for a pickup or the like.
REFERENCES:
patent: 5245622 (1993-09-01), Jewell et al.
patent: 5493577 (1996-02-01), Choquette et al.
patent: 5577064 (1996-11-01), Swirhun et al.
patent: 5606572 (1997-02-01), Swirhun et al.
patent: 5818861 (1998-10-01), Tan et al.
patent: 6021146 (2000-02-01), Jiang et al.
patent: 6031243 (2000-02-01), Taylor
patent: 6069905 (2000-05-01), Davis et al.
patent: 6185241 (2001-02-01), Sun
patent: 6618414 (2003-09-01), Wasserbauer et al.
patent: 6621843 (2003-09-01), Yoo et al.
Ichihara Jun
Sai Hironobu
Rabin & Berdo PC
Rohm & Co., Ltd.
LandOfFree
Surface light emitting type semiconductor laser having a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface light emitting type semiconductor laser having a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface light emitting type semiconductor laser having a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3464826