logo

t: +61 2 9319 0122
sales@warsash.com.au
Loading

Home > Products > Photonics Accessories: Beam Profilers & Laser Diagnostics

Beam Profilers & Laser Diagnostics

Beam Profiling Technology Overview

Beam Profiler Catalogue


Camera Based Profilers

Camera Based Profilers

Warsash Scientific offer a broad range of cameras in to cope with wavelengths from 13nm, extreme UV, to 3000µm, in the long infrared.
Technology From: Ophir Photonics

Camera Based Profilers

A camera-based beam profiler system consists of a camera, profiler software and a beam attenuation accessory. Warsash Scientific offer a broad range of cameras in to cope with wavelengths from 13nm, extreme UV, to 3000µm, in the long infrared. Both USB and FireWire interfaces are available for most wavelength ranges providing flexibility for either laptop or desktop computers.

BeamGage®, the profiling software, comes in three versions: Standard, Professional and Enterprise. Each builds off of the next adding additional capability and flexibility needed for adapting to almost any configuration requirement.

An extensive array of accessories for beam profiling are available, including components for attenuating, filtering, beamsplitting, magnifying, reducing and wavelength conversion. Also for wavelengths from the deep UV to CO2 wavelengths. Most of the components are modular so they can be mixed and matched with each other to solve almost any beam profiling requirement needed.

Key Features
  • ISO Standard Beam Parameters
  • Dslit, Denergy, D4σ
  • Centroid and Peak location
  • Major and Minor axes
  • Ellipticity, Eccentricity
  • Beam Rotation
  • Gaussian Fit
  • Flat-top analysis/Uniformity
  • Divergence
  • Pointing stability
[ Send Enquiry ]

Slit Based Profilers

Slit Based Profilers

The scanning slit beam profiler moves a narrow slit in front of a photo-detector through the beam under analysis.
Technology From: Ophir Photonics

Slit Based Profilers

Because slit scanners measure beams at high powers with little or no attenuation, they are ideal to profile beams used in material processing. Carbon dioxide (CO2) lasers are widely used in materials processing, and have a 10.6 micron wavelength that cannot be profiled with most cameras. Slit scanners, therefore, provide an convenient means of measuring high-resolution CO2 lasers with powers up to and exceeding 1000 watts.

The scanning slit beam profiler moves a narrow slit in front of a photo-detector through the beam under analysis. Light passing through the slit onto the detector creates a photo-induced current in the detector. The slit acts as a physical attenuator in the scanning slit beam profiler, and the amplification gain on the detector can be set to avoid detector saturation for most beam profiling. A digital encoder precisely measures slit position. The photo-induced current is then plotted as a function of slit position to determine a linear profile of the beam. From this linear profile, important spatial information such as beam width, beam position, beam quality, and other characteristics are determined. This technique can accommodate a wide variety of test conditions.

[ Send Enquiry ]

High Dynamic Range Far Field Profiler

High Dynamic Range Far Field Profiler

For optical fibre, the far-field distribution pattern is acquired without bending the fibre.
Technology From: Ophir Photonics

High Dynamic Range Far Field Profiler

The LD 8900HDR Far-Field Profiler uses goniometric methodology to measure true 3-dimensional profiles of optical components with up to 93dB dynamic range. All measurements are taken with the emitting fibre, planar waveguide, laser diode or LED inserted directly into the centre of the instrument's radial measurement area. For optical fibre, the far-field distribution pattern is acquired without bending the fibre. Bending the fibre can cause analysis and reporting inaccuracies. Parameters measured for optical fibre are:

  • Mode Field Diameter (MFD) — used to evaluate losses due to mismatch at connections of fibres and fibre components
  • Effective Area (Aeff) — used to assess non-linear effects
  • Numerical Aperture (NA) — a measure of the angular width of the fibre output. NA is equal to the sine of the half angle (sin θ/2) at a specified percentage of the peak value.
Send Enquiry

Far Field Profilers

Far Field Profilers

Both the LD 8900 and LD 8900R (wide dynamic range Goniometric Radiometer) provide full 3-dimensional measurements of the far-field pattern in minutes or less, with far better resolution than a CCD camera.
Technology From: Ophir Photonics

Far Field Profilers

Both the LD 8900 and LD 8900R (wide dynamic range Goniometric Radiometer) provide full 3-dimensional measurements of the far-field pattern in minutes or less, with far better resolution than a CCD

Charge-Coupled Device
camera. The LD 8900 far-field profiler provides direct real-time far-field measurements with >24dB dynamic range, while the wide dynamic range LD 8900R has a dynamic range of >36dB, which provides greater detail in the "tails" of the far-field pattern.

Both models have an angular sampling resolution of 0.055° and a field-of-view of ±72° (144°), and are ideal for characterising the light flux from many sources, including VCSEL

Vertical-Cavity Surface Emitting Laser
s, laser diodes (LDs), optical fibres, optical waveguides, and more. With the LD 8900R, measurement of the mode field diameter of optical fibre is possible in real time with greater than 5% accuracy.

The LD 8900 and the LD 8900R are available with either a silicon or InGaAs detector and have a standard entrance aperture of 2mm, with an optional 10mm entrance aperture for use with larger sources such as LEDs and LD bars. LD 8900 and LD 8900R complete systems include:

  • The Scan Unit
  • The Motion Control Module
  • Goniometric Radiometer Acquisition and Analysis Software for Microsoft Windows operating systems
  • PCI
    Peripheral Component Interconnect
    Interface Box
  • Power and instrument cables
  • An optional semi-custom source mount, specifically designed to meet your application needs, can be quoted upon request for either the LD 8900 or the LD 8900R
Send Enquiry

All products and information are subject to change without notice.