Highest brightness red laser for large size projectors
Mitsubishi Electric has announced a new continuous-wave (CW) laser diode (LD), the ML562G85 delivering highest output power of 2.1W emitting 639-nanometer(nm) red light for projectors. This high-power laser diode will serve the light needs of large size high brightness projectors.
Optical component technology researchers had a huge challenge in developing high brightness red colour laser diodes offering high output at high temperature using a lasing wavelength not exceeding 640 nm, the preferred maximum for achieving necessary luminosity. Now Mitsubishi Electric able to overcome this challenge.
Mitsubishi uses 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. Also the 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.
The other interesting features include: this device can operate in the wide operating temperature range, large 9.0-mm-diameter transistor-outline can (TO-CAN) package improves heat dissipation, and 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).