Abstract
780 nm-band AlGaAs and 650 nm-band AlGaInP laser diodes are monolithically integrated on a GaAs substrate as the light source in DVD/CD optical pickups. In order to reduce internal losses for improved characteristics and to ensure better flexibility of device design, real-refractive index-guided self-aligned (RISA) structure is employed for both 780 nm and 650 nm-band LDs. As a result, low noise characteristics due to self-sustained pulsation in the both wavelength bands have been achieved. A dual-wavelength laser with a high power ( > 100 mW) 780 nm-band LD has also been developed for recording of CD-R/RW disks.
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.
