Osram direct green laser diodes (510 - 530nm)
OSRAM Opto Semiconductors, a leading supplier of direct green laser diodes, has introduced Indium Gallium Nitride (InGaN)-based direct green laser diodes, wavelengths from 510-530 nm, for pico projection and other RGB or green-laser applications. Two models offer slightly different wavelength ranges at power levels of 30mW or 50mW from a 3.8 mm diameter package (at 25 degrees Celsius), with high colour rendering and excellent contrast, according to Osram.
Mounted in a tiny TO38icut and TO56 package with integrated photodiode, they combine an unbeatable form factor with excellent beam quality which makes them particularly suitable as light sources for projectors and showlasers as well as point and line lasers.
frequency doubling of infrared lasers is redundant
Direct diode green lasers mean that frequency doubling of infrared lasers is redundant. The wavelength of the new single-mode PL 520 laser diode is 515-530 nm - the precise green for laser projection applications. Its optical output is 50 mW and its efficiency is typically 5-6 % at present. The single-mode PL 515 offers an output of 30 mW in a wavelength range of 510 to 530 nm. With a package diameter of only 3.8 mm these laser diodes enable projection units to be reduced considerably in size.
Direct green laser diodes are an important step toward powerful embedded projectors and signal the end of the laborious method of producing green light by doubling the frequency of infrared lasers.
Download specifications - https://www.oe-company.com/lasers/osram-green-laser-diodes.html
very high beam quality
Osram says the lasers have a very high beam quality, in other words an extremely narrow beam that spreads out only slightly due to its small divergence angle. This is an important property for micro -electro-mechanical systems (MEMS)-based projectors in which the colour components per pixel result from the emission time of the laser diode. There is also no need to adjust the focus of the projection image. The image is always sharp, even on curved surfaces. With their excellent beam quality, the lasers are well suited to optical imaging of light.
The single-mode green lasers also open up new possibilities as light sources for laser shows. Their high beam quality enables extremely fine structures to be displayed at a considerable distance. The projectors also benefit from the high thermal stability and small size of the lasers. Thanks to their efficiency, the temperature increase of the lasers during operation is minimised and a long lifetime and high reliability at continuous operation is guaranteed.
greater visibility outdoors
Green light is perceived more easily by the eye than red light; therefore, for the same laser output, and, crucially, the same laser safety class, green laser diodes have the advantage as point or line lasers, especially outdoors. This means that distance meters, such as those used by builders, can be used with greater safety over larger distances, says Osram.
Another benefit of using direct green lasers for outdoor applications rather than frequency-doubled lasers, is that they have a high operating temperature range of up to 85° C without active cooling.
Other applications include medical, biotechnology and spectroscopy
Osram laser diode product range
The Osram laser diode product range includes green and blue laser diodes packaged in extremely compact, 3.8mm diameter TO cans. The diodes feature low beam divergence, long lifetime and excellent stability across a broad temperature range.
Osram green and blue laser diodes are available from the Optoelectronics Company Ltd./p>
ABOUT OSRAM OPTO SEMICONDUCTORS
OSRAM Opto Semiconductors is OSRAM's specialty brand for opto components, solutions-based semiconductor technology for lighting as well as sensor and visualisation applications. For more than 40 years, the company has been a world leader known for highest quality demands, taking innovation to new limits.
The portfolio ranges from basic semiconductor technologies to individual customer applications in a broad variety of markets from general illumination to automotive or consumer electronics. Customers benefit from comprehensive consulting and support around component and product development.
For more information go to www.osram-os.com.
ABOUT THE OPTOELECTRONICS COMPANY LTD
The Optoelectronics Company is a manufacturer of custom-designed and standard laser diode modules and laser diode collimators. It is also a supplier of USHIO (ex Oclaro ex Opnext) Laser Diodes and Panasonic Aspherical Glass Lenses to industrial, medical, biomedical and defence customers throughout the UK, Europe and USA.
This news release is issued in accordance with clause 1.2j of the British codes of advertising and sales promotion and therefore cannot be subject to a transaction of any kind.