Goniometric Radiometer Far-Field Profilers: LD8900 and LD8900R

Profiling divergent light sources present many challenges, but Photon's patented Goniometric Radiometer Far-Field Profilers characterize the angular radiation intensity of light sources, such as laser diodes, LEDs, optical fiber, and waveguides simply and accurately without moving either the source or the detector. The LD 8900 and LD 8900R (higher dynamic range) Goniometric Radiometers are available with either a silicon or InGaAs detector and provide direct real-time far-field measurements of the far-field pattern in minutes or less.

Photon's new adapter for the LD8900 and LD8900R Goniometric Radiometer far-field profilers extends the real-time measurement capability for fibers, fiber delivery systems and other divergent sources to power levels up to the kilowatt range.

The adapter uses a UV-grade fused silica prism to sample the beam by front-surface reflection. It is available with most standard fiber connectors and is easily adaptable for direct interfacing of laser diodes as well. In tests performed in a customer laboratory, a model LD-8900 demonstrated ability to measure a 532 nm beam of over 700 Watts. Photon's patented Goniometric Radiometers generate real-time far-field profiles and angular measurements of divergent sources, including full 3D analysis.

• Measure
  • Single- and multi-mode fiber
  • Numerical Aperture
  • Scatter pattern of a transmitting diffuser
  • Optical Waveguides
  • Influence of elements in the light domain; e.g., lenses, filters, waveguides
  • Pigtailed light sources
  • Mode Field Diameter (LD 8900R only)
• Optimize
  • Collimation
    • Laser diodes
    • GRIN lenses (LD 8900R only)
  • Coupling of Energy
    • Fiber
    • Cavity
    • Lenses
    • Detectors
    • Array waveguides
    • Dispersion-compensating elements WDM MUX/DEMUX
    • Other optical elements