Sony Develops World's Highest Optical Output 7.2W, 635nm Red Semiconductor Laser Array

Aug 25, 2008
Laser Structure

Sony Corporation today announced that it has developed a high-power, short-wavelength red semiconductor laser array diode, ideal for use as a light source in projection devices.

In order for red semiconductor laser array diodes to be used in projection devices, they are required to deliver high brightness, high efficiency and room temperature operation. This newly developed laser array diode achieves wavelength oscillation of 635nm to generate brightness levels 1.6 times conventional red semiconductor lasers.

The laser array is composed of 25 broad stripe lasers, with the length of each laser bar 10mm. The laser bars are mounted on a copper heat sink block. Sony has achieved optimum uniformity within the laser active layer, high crystal purification levels, and high concentration of Magnesium doping within the AlInP cladding layer to realize low threshold currents and improved laser characteristics. By introducing new die bonding technologies for attaching the laser array and heat sink Sony has also enabled high levels of heat dissipation from the laser array.

Furthermore, the accuracy of the laser bar mounting process has been improved to provide advanced coupling efficiency between the laser array and optical devices. As a result of these developments, this new red semiconductor laser array combines 635nm wavelength, 7.2W optical power, 23% energy conversion efficiency and operation within 25°C room temperature conditions. These heat dissipation and optical features enable it to be easily incorporated in the design of projection devices.

Sony will present these results at the 69th Autumn Meeting of the Japan Society of Applied Physics to be held from September 2nd – 5th at Chubu University in Nagoya, Japan.

Provided by Sony

Explore further: A bump circuit with flexible tuning ability that uses 500 times less power

add to favorites email to friend print save as pdf

Related Stories

Sony suspends some production at more Japan plants

Mar 22, 2011

(AP) -- Sony Corp. said Tuesday it is suspending some production at plants in Japan that make popular consumer electronics like digital cameras and televisions due to shortages of components and raw materials following the ...

Recommended for you

Music site SoundCloud to start paying artists

1 hour ago

SoundCloud said Thursday that it will start paying artists and record companies whose music is played on the popular streaming site, a move that will bring it in line with competitors such as YouTube and Spotify.

The ethics of driverless cars

2 hours ago

Jason Millar, a PhD Candidate in the Department of Philosophy, spends a lot of time thinking about driverless cars. Though you aren't likely to be able to buy them for 10 years, he says there are a number ...

We need new laws to govern cyberwarfare

2 hours ago

President Bush is reported to have said: "When I take action, I'm not going to fire a US$2m missile at a US$10 empty tent and hit a camel in the butt. It's going to be decisive." As the quote suggests, when ...

Ticketfly buying WillCall for on-premise data

3 hours ago

Ticketfly Inc., a San Francisco-based technology company among several posing a challenge to Ticketmaster, is acquiring WillCall Inc., a crosstown rival that turns your smartphone into a mobile wallet at live events.

Voice, image give clues in hunt for Foley's killer

4 hours ago

Police and intelligence services are using image analysis and voice-recognition software, studying social media postings and seeking human tips as they scramble to identify the militant recorded on a video ...

User comments : 4

Adjust slider to filter visible comments by rank

Display comments: newest first

wrack
not rated yet Aug 25, 2008
Wow may be I can dream for a cheaper HD Projector
mattytheory
not rated yet Aug 26, 2008
I dont think it will happen any time soon.
kniedzius
not rated yet Aug 26, 2008
Couple of years maybe. It still needs lots of testing and attention.
Keter
not rated yet Aug 26, 2008
I'm not sure what the eventual productization of this might be, but I doubt they intend for it to be used in TV projectors. It sounds like this will project a red beam like a laser pointer. Maybe it will be used for large scale measuring, surfacing, leveling, and alignment projects in construction?