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  • Photon Inc. Presents the CLEO/QELS 2000 New Product Award Winner

Photonics Spectra
Feb 2001
Photon Inc. introduced the CLEO/QELS 2000 New Product Award instrument, the LD 8900R Wide Dynamic Range Goniometric Radiometer for characterizing the angular radiation intensity of light. The LD 8900R provides direct real-time far-field measurements of light flux from any light-emitting surface, such as VCSELs, laser diodes, and optical components with an angular field-of-view of 144° and a resolution of .055°. The LD 8900R provides full three-dimensional views of light patterns accurately (>36 dB) in near real time.

Measurement of the mode field diameter of optical fiber is also now possible in real time with greater than 5% accuracy. The LD 8900R is available with either a silicon detector or an InGaAs detector, and has a standard entrance aperture of 2 mm, with an optional 10 mm entrance aperture for use with large sources such as LEDs and LD bars. The LD 8900R is a modular unit designed for R&D, manufacturing, and custom applications, such as testing LDs at the wafer level.

For more information, go to LD 8900R Wide Dynamic Range Goniometric Radiometer, visit our web site or contact Photon sales. PH: 408-226-1000; Web; Email:

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