Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yukio Yamasaki0
Shigetoshi Ito0
Date of Patent
April 8, 2008
0Patent Application Number
104970180
Date Filed
November 25, 2002
0Patent Primary Examiner
Patent abstract
A drive current is generated by mixing a pulse signal from a pulse generator and a DC current from a DC current power supply using a T circuit and injected into a nitride semiconductor laser having a horizontal light-confinement ridge structure. The horizontal light-confinement coefficient of the nitride semiconductor laser is between 85% and 99%. The time when the current waveform of the drive current is continuously over the threshold current of the nitride semiconductor laser ranges from 5 nsec to 1,000 nsec.
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