Abstract
An improved structure of a terraced substrate (TS) laser is presented. The injected current distribution is calculated and compared with that in a conventional TS laser. It is shown that 90 percent of the total current is injected in a filamentary stripe region between the two bends of the active layer by the improved structure. A TS laser with a very low threshold current of 12 mA is obtained at a cavity length of 120 μm under continuous operation. Output powers obtained by the TS laser with and without a facet coating are 70 and 40 mW per facet, respectively. The improved TS laser shows both stable fundamental and longitudinal mode oscillations as in the conventional TS laser. The operating time of TS lasers is estimated to be more than 2 \times 10^{5} h at room temperature from the result of accelerated life tests at the high temperature of 70°C.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
