News: Optoelectronics
7 April 2022
New ams OSRAM green laser diode offers 4x higher perceived brightness than red lasers used in industrial equipment
ams OSRAM of Premstaetten, Austria has introduced a green laser diode that is said to be a brighter, easier-to-use, more reliable and cost-competitive replacement for red lasers in applications such as levelling, scanning, biosciences and dot projection.
The new PLT5 522EA_Q is an edge-emitting laser with a tightly controlled beam. Its peak output power is 20mW, at a typical peak emission wavelength of 520nm and a spectral bandwidth of 2nm. The laser diode can be used in either continuous-wave or pulsed mode.
The PLT5 522EA_Q for the first time, it is claimed, enables product makers to benefit from the 4x brighter appearance of a green laser compared to red without sacrificing any of the valuable features of red lasers. The green laser diode has been rigorously tested for lifetime and reliability at a maximum operating temperature of 70°C. Its lifetime ratings are compatible with the standard requirements of industrial equipment manufacturers.
“The much better visibility of green laser beams compared to red means that they are preferred by users in industrial applications such as construction and surveying, and for long-range scanning,” says senior marketing manager Thomas Brandes. “The introduction of the PLT5 522EA_Q enables manufacturers to finally replace red lasers with green without compromising on any aspect of their product design.”
The new laser diode is housed in a hermetically sealed and grounded TO56 metal can. It is compatible with the driver topologies commonly used with red lasers, and simplifies the use of green lasers, requiring minimal modification of existing product designs.
Unlike a red laser diode, the PLT5 522EA_Q needs no burn-in. It includes a photodiode, which is often required for eye-safe operation.
ams OSRAM offers customers technical support to assist integration into end-product designs. Support includes help with driver integration, optics, thermal evaluation and with application-specific lifetime calculations.
Samples of the PLT5 522EA_Q are available now from any authorized distributor.
Osram’s 140mW direct green laser enables projection from smartphones
