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LASER/LASER DIODE TESTING
is the spatially integrated total light output from a light source.
Lasers are monochromatic light sources with optical powers at a
finite wavelengths, so their optical power is characterized as the
power at a specific wavelength; 5mW at 1064nm as an example.
Laser diodes are also
monochromatic light sources
and are commonly tested in diode form, diode bar, or in a module
with and without the module fiber. Laser diodes are used in
communication applications often used in remote hard to get to
places such as sea beds or earth orbiting satellites, therefore
laser diodes are typically tested for their
The most common and convenient method for measuring the total
radiant power and peak wavelength simultaneously is using an
integrating sphere power meter. Integrating sphere laser power
meters are calibrated to measure optical power and when combined
with a high resolution spectrometer, OSA or wavemeter the peak
wavelength can me monitored in parallel with the power monitor for
life test applications.
Typical quantities of interest are total radiant flux, peak
wavelength, and rated life.
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