July 11, 2017: Mitsubishi Electric Corporation (TOKYO: 6503) announced today that it will launch a new continuous-wave (CW) laser diode (LD), the ML562G85, offering a world-record output power of 2.1W and a brilliant 639-nanometer(nm) red light for projectors on February 1, 2017. The LD’s pure red color and low power consumption are expected to be adopted for large-venue laser-based projectors requiring high brightness.
It has been a technical challenge to produce red LDs offering high output at high temperature using a lasing wavelength not exceeding 640 nm, the preferred maximum for achieving necessary luminosity. Mitsubishi Electric succeeded in developing its new CW high-power red LD that operates at high temperature by using original high-power technology, including an optimized LD structure.
1) 2.1W output power in CW and brilliant 639-nm red light
– Optimized epitaxial structure and emitter size enables world-record 2.1W output (CW), 4.2 times greater than that of the company’s current model
– High-luminosity 639-nm laser light and 2.1W output (CW) produce 250 lumens per LD
– High wall-plug efficiency of 41 percent at 2.1W (CW) and low case temperature of 25 degrees Celsius help to reduce projector power consumption
2) Widest operating temperature range for a red LD thanks to improved heat dissipation
– Large 9.0-mm-diameter transistor-outline can (TO-CAN) package improves heat dissipation
– Unprecedented operating temperature range of 0 to 45 degrees Celsius at 2.1W (CW), compared to the current model’s range of 0 to 40 degrees Celsius at 0.5W (CW)