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50 mW Laser at 405 nm
Jul 2004
Coherent Inc.Request Info
Radius 405 Packaged Diode Laser
SANTA CLARA, Calif., July 7 -- Coherent Inc has introduced a 50-mW version of its Radius 405 family of packaged diode lasers. This is the highest power available to date from a self-contained diode laser operating at 405 nm. As with other Radius products, these continuous-wave lasers feature a cylindrical housing, with the drive electronics and a cooling fan integrated within the laser head. This configuration, which is the same diameter as the standard helium neon lasers, simplifies integration into OEM systems and instruments. Other product features include active thermoelectric cooling of the diode and continuous wave light-loop control, which ensure that this laser delivers the lowest noise and best stability for any laser in its class.

The Radius is available as a standalone laser head for OEM applications. A CDRH (Center for Devices and Radiological Health)-compliant version is also available for laboratory applications and includes a mini-control unit, which integrates a key-switch, emission indicator, interlock and five-second power-on delay. The remote interlock can be used for on-demand operation, thereby increasing the lifetime of the diode and the overall lifetime of the product.

Applications for the Radius 405-50 are primarily biomedical: the 405 nm wavelength is ideal for exciting short wavelength dyes and fluorescent markers that formerly required a bulky, power-hungry ion laser. Other applications include flow cytometry, confocal microscopy and emerging pharma applications, such as microwell and microarray readers.

For more information, visit:; e-mail:

Coherent Inc.
5100 Patrick Henry Dr.
Santa Clara, CA 95054
Phone: (408) 764-4983
Toll-free: (800) 527-3786
Fax: (408) 988-6838


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CDRH-compliantCoherentcontinuous-wave lasersCW laserMicroscopypackaged diode lasersProductsRadius 405

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