Osram direct green laser diodes (510 - 530nm)
OSRAM Opto Semiconductors is one of the first worldwide leading suppliers of direct green laser diodes. Mounted in a tiny TO38icut and TO56 with integrated photodiode package, the laser diodes, with an optical output power of 30 and 50 milliwatts, combine an unbeatable form factor with an excellent beam quality which makes them particularly suitable as light sources for projectors and showlasers as well as point and line lasers.
Compared to frequency-doubled lasers, direct green lasers have a high operating temperature range of 80° C without active cooling. This particular quality makes them ideal for outdoor applications.
High beam quality in a small package
With their excellent beam quality, these lasers are well suited for optical imaging of light. In addition, their small package size is particularly advantageous for very compact systems like pico projectors.
High efficiency and long lifetime
Thanks to their efficiency, the temperature increase of these lasers during operation is minimised. A long lifetime and high reliability at continuous operation is guaranteed.
Line and dot lasers
High temperature stability makes direct green lasers the ideal solution for point and line lasers and, as laser light in the green spectrum is brighter and more visible to the human eye than the equivalent red laser light, it is possible to maintain the same laser output and the same laser safety class with a green laser diode as a red laser diode.This means that rangefinders, such as those used by builders, can be used safely over greater distances.
Direct green laser diodes are an important step toward powerful embedded projectors. The laborious way of producing green light by doubling the frequency of infrared lasers is no longer needed. In particular, pico projectors based on MEMS mirror (micro-electromechanical system) will benefit from the small size and the high beam quality of the single mode lasers. These laser diodes produce the right green wavelength for projection and offer a sufficient efficiency of typically 5-6% for battery driven applications.
For show lasers, direct green lasers open up new possibilities as light sources. Their high beam quality enables extremely fine structures to be displayed even over large distances.
Medical applications, Biotechnology, Spectroscopy
Osram direct green laser diodes : major characteristics (at Tcase 25 °C)
*: with integrated photo diode