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.
bqm50screenshot04large The clear, simple to use software gives total control over the measurement which can be aligned and completed in a few minutes. Measurement time is less than 20 seconds.

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This system was developed in conjunction with NPL and is protected by an NPL patent. npltechapp

Ordering information

Part number Description
BQM-50 Laser beam propagation analyzer for laser wavelengths between 400nm and 1100nm. System includes optical unit, CCD camera, cables, software, and user manual.
Accessories
BQM-100-AR1 Attenuator wheel with 5 ND filters (ND 0.5; 1.0; 2.0; 4.0; 6.0 ) AR coated for wavelength range 350 – 700 nm
BQM-100-AR2 Attenuator wheel with 5 ND filters (ND 0.5; 1.0; 2.0; 4.0; 6.0 ) AR coated for wavelength range 650 – 1050 nm
BQM-110-AR1 Set of 5 ND filters (ND 0.5; 1.0; 2.0; 4.0; 6.0 ), screw mount, AR coated for wavelength range 350 – 700 nm, in box
BQM-110-AR2 Set of 5 ND filters (ND 0.5; 1.0; 2.0; 4.0; 6.0 ), screw mount, AR coated for wavelength range 650 – 1050 nm, in box
BQM-120-0532-25-UNP High energy plate beamsplitter, mounted, 532 nm centre wavelength, unpolarised
BQM-120-0800-25-UNP High energy plate beamsplitter, mounted, 800 nm centre wavelength, unpolarised
BQM-120-1064-25-UNP High energy plate beamsplitter, mounted, 1064 nm centre wavelength, unpolarised
BQM-130-AR1 Beam sampler, AR coated for wavelength range 350 – 700 nm, picks off 1-10% of an incident beam
BQM-130-AR2 Beam sampler, AR coated for wavelength range 650 – 1050 nm, picks off 1-10% of an incident beam
BQM-200 Beam dump, 3/4 inch aperture, 50W maximum, air cooled
BQM-400-AR1 Beam expander/reducer, Galilean, 5X, AR coated for wavelength range 350 – 650 nm
BQM-400-AR2 Beam expander/reducer, Galilean, 5X, AR coated for wavelength range 650 – 1050 nm

 

Images
Features
Technical Specification
Document Downloads
bqm50450pix
bqm50screenshot04large
  • 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.

    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 (direct input, can be varied with optional beam reducers)

    Liquid Lens Optical power

    -5 to +15 diopters

    Liquid Lens Clear aperture

    3.9 mm

    Liquid Lens Controller connector

    USB 2.0 and RJ11

    Liquid Lens Effective voltage range

    30 to 70 V

    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

    Sensor 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

    Operating temperature

    0º to +50ºC

    Humidity

    5%-95%, relative, non-condensing

    Mass

    0.5kg

    Mounting options

    M6 threaded post hole

    Computer requirements (minimum specification)

    1.5GHz or higher processor, 1GB RAM ; USB 2.0 port - NOTE system will not work with USB 1.1 port

    Operating systems supported

    Windows 7/8 32bit or 64bit, Windows XP SP3