Service Manuals, User Guides, Schematic Diagrams or docs for : Keithley 2500INT 2500INT

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                                                                          2500INT                              Integrating Sphere

                                                                                                                                                      The Model 2500INT Integrating Sphere is the latest addition to
                                                                                                                                                      Keithley's growing line of solutions for LIV (light-current-volt-
Enables direct optical power measurement in watts with the Model 2502




                                                                                                                                                      age) testing . When connected via a low noise triax cable to the
                                                                                                                                                      Model 2502 Dual Photodiode Meter included in Keithley's LIV
                                                                                                                                                      Test System, the integrating sphere allows the system to make
                                                                                                                                                      direct measurements of optical power, with results expressed
                                                                                                                                                      in watts . The integrating sphere simplifies production testing of
                                                                                                                                                      laser diodes (LDs), light emitting diodes (LEDs), and other opti-
                                                                                                                                                      cal components by eliminating common optical power measure-
                                                                                                                                                      ment problems related to detector alignment, beam profile,
                                                                                                                                                      polarization, and back reflection .

                                                                                                                                                      Choice of Three Detector Types
                                                                                                                                                      The Model 2500INT is available with a silicon (2500INT-2-Si),
                                                                                                                                                      germanium (2500INT-2-Ge), or cooled indium gallium arsenide
                                                                                                                                                      (InGaAs) detector (2500INT-2-IGAC), each calibrated with the
                                                                                                                                                      sphere . Spheres equipped with cooled indium gallium arse-
                                                                                                                                                      nide detectors include a controller to regulate the detector's
                                                                                                                                                      temperature .
                                                                                                                                                      unaffected by DuT beam Profile
                                                                                                                                                      Laser diodes can produce non-gaussian beam profiles, which
                                                                                                                                                      can lead to inaccurate optical power measurements due to
                                                                                                                                                      underfill or overfill of the detector . While a number of methods
                                                                                                                                                      are available to correct for underfill and overfill, these methods
                                                                                                                                                      can add to the overall inaccuracy of the measurement .
                                                                        

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