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Laser Beam Propagation Analyzer BQM-50

Brand:ArdenModel:BQM-50

The BQM-50 is designed to allow complete measurement of laser beam propagation characteristics. In this system a liquid lens, which can vary its optical power in response to a changing input voltage, is used to remove the need for the translation stage used in traditional systems to allow beam widths to be sampled through the laser beam caustic. This makes the BQM-50 one of the most compact and capable beam quality systems available. This system was developed in conjunction with NPL and is protected by an NPL patent.

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Features and benefits

  • Complete beam characterisation - M², Divergence angle, Width at waist, Waist location, Rayleigh Range and Astigmatism etc.
  • Measurement time under 20 seconds means you can see changes in beam quality such as during warm-up
  • Wavelength range 400 to 1100nm
  • Compact size means you can measure in situ
  • Easy alignment and adjustment saves time and reduces possibility of operator errors
  • Compatible with CW and Quasi-CW Pulsed Laser source
  • USB2.0 direct connection gives portability - take the BQM-50 to where you need to do measurements.


Technical specification - BQM-50 Laser Beam Propagation Analyzer

Part number BQM-50
Description Laser beam propagation analyzer for laser beams with wavelength between 400 and 1100nm. System includes optical unit, CCD camera, cables, CD with software, and user manual.
General  
Wavelength range 400–1100nm
Accuracy
  • ±5% typical, ±10% waist location and Rayleigh length for wavelength range 400 to 700nm
  • ±10% typical, ±10% waist location and Rayleigh length for wavelength range 700 to 1100nm
Measurement cycle time 20 seconds typical, depending on conditions
Dimension 150mm L x Ø50mm
Beam size 0.4 to 1.5mm (can be varied with optional beam reducers)
Liquid lens  
Optical power -5 to +15 diopters
Clear aperture 3.9 mm
Controller connector USB 2.0 and RJ11
Effective voltage range 30 to 70 V
Camera  
Sensor 1/2 inch CCD, 6.5 x 4.8mm array
Effective pixels 1392 x 1040, 4.65µm square pixels
Cover glass Removed
Damage threshold 0.15mW/cm2 CW, 1.0 J/cm2 pulsed
Shutter type Global
A/D conversion 12 bit
Maximum frame rate 15 fps ( full frame @ full resolution )
Exposure range 100 µs to 1000 ms
Interface connector USB 2.0, 3m mini-B to A and RJ45 trigger connector
Trigger Internal and external, TTL ( positive transition )
Supply voltage USB 2.0 full bus power
Supply power ~ 2.5 W
Environmental  
Operating temperature 0º -> +50ºC
Humidity 5%-95%, relative, non-condensing
Physical  
Mass 0.5kg
Mounting options M6 threaded post hole

NOTE - Latest software - Version 2.1 -> click for more details