Features

• Measures beam width, ellipticity, divergence, collimation, pointing, uniformity, energy distribution, M²
• Beam measurements to 50 µm (1/e²); beam parameters to ISO standard
• Compact sensor head with built-in variable attenuator

The BeamProfiler consists of three distinct modules: the Laser Sensor, the Image Capture Card, and the Software. The laser sensor is a compact measurement head comprising a silicon detector array and a variable attenuator. Several different arrays are available. Output from the unit is standard video (RS170 or CCIR). Every aspect of the optical, electro-optical and mechanical design of the Laser Sensor has been carefully optimized to achieve accurate beam width and profile measurements of CW and pulsed lasers.

The Image Capture Card is required to quantify the video data from the BeamProfiler sonsor head. Many cards are available, but to achieve the utmost accuracy in laser beam measurements, we specify a PCI Bus frame grabber card.

At the heart of the BeamProfiler system is the BeamProfiler software, written specifically for Windows 95/98 and NT. Both simple profile visualization and sophisticated beam analysis tools are at the click of a menu button. The software performs rigourous data analysis over specific regions of interest, either system- or user-defined. Quantitative measurements of numerous beam spatial characteristics can be obtained, such as:

• beam width
• centroid and peak locations
• major and minor axes
• beam orientation
• ellipticity
• eccentricity
• 1D and 2D Gaussian fit
• beam uniformity
• beam divergence
• pointing stability
• M2
• k-factor
• more....

Pass/fail criteria can be applied to these parameters. Data can be exported to spreadsheets, statistical analysis programs and process/instrumentation control programs.

Other Available Models:

Model 2321 - no Variable Attenuator, for wavelengths 190 nm - 1100 nm

Model 2322 (UView) - for wavelengths <157 nm - 390 nm

Model PH7290 - for wavelengths 800 nm - 2200 nm

Model ATP-SM - compact variable attenuator

Accessories for :

Use with any computer to open, review, and re-analyze files that you saved with software.

Profile View - The Profile window displays two pinhole scans in orthogonal directions through the image displayed in the live video window. The scan locations are identified by the crosshairs and axis overlays in the Video window. If data analysis is set to the default xy mode, then the scan axes are horizontal and vertical. If data analysis is set to elliptical mode, then the scan axes are oriented along the major and minor axes of the laser beam image. The scan locations can be selected to be through either the beam centroid, the peak pixel, or through user selected points. The orientation of the axes can also be changed arbitrarily.

Video - The Video window displays the video laser image.

3D Profile - The 3D Profile window displays the laser beam image in a "3-dimensional" viewing format. The laser beam image can be rendered with either a wireframe or solid surface, with user selected clip levels and colors.

2D Contour - The 2D Contour window displays the laser beam image with user specified contour overlays.

Beam Statistics - The Beam Statistics window displays a tabular summary of beam parameters and statistics. Any or all of the computed beam parameters may be viewed in this way. It is also used for Limit Analysis.

Time Statistics - The Time Statistics windows display strip charts of beam parameters versus time. Any or all of the computed beam parameters may be viewed in this way. Several overlays are available in the options menu, including grids, statistical markers, and numerical statistical summaries.

Pointing - The Pointing window displays a screen that shows and tracks the location of the beam centroid with a colored dot or cross. It also displays a table showing the relative current position and the relative maximum position in the horizontal, vertical, and radial directions, and the corresponding angular displacement. A zoom control allows the user to scale the aperture of the pointing screen.

K-Factor - The K-Factor Wizard window is an interactive program for determining the k-factor M2 by the Rayleigh Method. The K-Factor Wizard window is a series of dialog boxes that prompt and guide the user through a series of measurements and data entries required for calculating the k-factor and M2. The calculated values are displayed in the final dialog box.