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Pulsed Laser Power Measurement Systems

Labsphere′s LPMS laser power meters measure the CW output power of lasers in the range 15 µW to kW in the spectral range from 300 nm to 20 µm. The unique arrangement of the integrating sphere and the detector inputs enable the measurement of laser sources with a beam divergence of up to +/- 40°. At the same time, the measurement is not influenced by changes in the beam coupling. The LPMS system consists of LPM integrating spheres with diameters of 2, 4 and 6 inches, a detector, readout electronics and a power calibration. A second detector input can be used for an optional spectrometer. Various detectors such as silicon, InGaAs or germanium are available. With three different coatings of the integrating sphere (Spectraflect®, Spectralon® and InfraGold®), a wide spectral range is covered. 

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  • Special detector arrangement geometry allows stable measurement of highly divergent lasers
  • No coupling optics required
  • Laser power measurement insensitive to variations in coupling direction and coupling position
  • Two detector inputs
  • Complete LPMS system includes integrating sphere, detector, readout electronics and calibration
  • Integrating sphere also available separately (product number LPM)
  • Liquid-cooled and gold-coated spheres available for high-power lasers

Sphere Material:

Spectraflect® or Spectralon® or Infragold®

Sphere Diameter:

2 in (5.08 cm) 4 in (10.16 cm), 5.3 in (13.46),

6 in (15.24 cm)

Sensor:

Silicon or InGaAs

Spectral Range:

(nm) 350 – 1100 / 800 – 1700 / 800 – 1800

Spectral Peak:

(nm) 975 / (nm) 1300 / (nm) 1600

Minimum Power at 975 nm:

1.8 nW / 7.0 nW  /1.6 nW

Maximum Power at 975 nm:

1.8 W / 7 W /16 W

Sampling Rate:

Low 10Hz, High: 5000Hz 

Date Recording Rate:

5kHz with internal sample rate of 20kHz 

Recording Interval:

0.1  to 0.0002 sec

Triggering:

5V TTL female BNC

Computer Interface:

USB-A

Power Requirements:

USB-A, 5V

Operating Temperature:

20° – 40° C

  • Power measurement of collimated and divergent lasers
  • Laser and laser diode characterisation
  • Characterisation of infrared lasers, CO2 lasers and laser diodes Bars

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