Development of 2-Wavelength Laser Diodes with Significantly Lower Operating Current by ROHM
Laser guides are typically come in to types, one is the Loss Guides and the other is Real Index Guides. In spite of being simple and inexpensive, the Loss Guides have a tendency to absorb light within the device during laser oscillation besides showing unstable at high temperatures. On the other hand, Real Index Guides provide a stable operation with no light absorption, but their manufacturing process is complex and the production cost is high, limiting them to be only utilized as high output lasers. In response to this limitation, Rohm has succeeded in developing a highly reliable 2-wavelength laser targeted for low output applications such as DVD/CD playback by using an optimized, highly efficient Real Index Guide with no light absorption loss. Read more
