A record-breaking red laser diode is being released by Mitsubishi Electric Corp this month, which they say will perfectly suit pico projectors and other pieces of equipment that need high-brightness red light sources.
The ML501P73 red laser diode (LD) is said to have record pulsed output power of 1W for the 638nm wavelength band. The capabilities will improve on the current maximum output of 500mW, which was achieved in January and will double the available luminosity to more than 120 lumens.
Pico projectors been attracting increasing attention and gaining in popularity from their versatility and the fact that they can be embedded into mobile devices such as mobile phones and laptops.
Laser diodes commonly provide their light sources, as they can project higher outputs while consuming less power than the LED sources used in larger projectors. They can also provide a wider colour range and enable focus-free operation.
The ML501P73 can be operated over a temperature range of –5ºC to +40ºC - which is crucial, due to the inability of previous LDs to offer insufficient brightness at high temperatures. Mitsubishi says it has been able to develop this through applying window mirror structures and epitaxial growth technology.