NanoScan for High-Power Beam Applications

High-Power NanoScan

 

  • Measure focused CO2 laser beams up to 5 kilowatts
  • Ideal for measuring lasers operating with pulse width modulation (PWM) power control.
  • Q-switched lasers and other higher frequency pulsed lasers
Description
Specifications
Ordering Info
Catalog/Manual
Download Data Sheet.
Photon’s High-Power NanoScan can measure focused CO2 laser beams up to 5 kilowatts. The High-Power NanoScan is equipped with a pyroelectric detector with nickel gold slits and drum. A cooling fan mounted on the scan head body provides additional heat management. With the new “peak connect” algorithm and the software controlled variable scan speed, the High-Power NanoScan is ideal for measuring lasers operating with pulse width modulation (PWM) power control. Measurement of Q-switched lasers and other higher frequency pulsed lasers is also possible using this feature.
What Can be Measured?
Photon’s High-Power NanoScan is designed to measure “high-power” laser beams that were previously impossible to measure with standard NanoScan products. High-Power is a fairly indistinct term that means different things in different contexts. For our purposes, “high-power” is defined as between 100W and 5000W, however the High- Power NanoScan will not be able to measure this power range for all wavelengths. High-Power laser beams are handled by using reflective materials, and the level of reflectivity, and thus its inverse, absorption, are dependent on the wavelength of the laser light.

In general the long infrared wavelengths, such as that of the carbon dioxide laser at 10.6microns, are highly reflective. These allow for the highest power measurements up to the maximum levels of several kilowatts. When measuring these lasers and power levels the principle concern is the heat buildup in the scan head. The surfaces of the measurement drum and slits are better than 98% reflective to this wavelength, and thus only 2% of the incident power will be absorbed by the scanhead and heat it up. Nonetheless, at 5000W this represents a heat load of 100W that will raise the temperature of the internal components, which may cause damage to the detector and encoder electronics. The High-Power NanoScan is designed to be used for short-term measurements at these power levels. The beam should only be incident on the scan head for a few seconds. The software is equipped with a record mode that makes it easy to make a short measurement and then review the data while the scanhead is allowed to cool down.

Measuring high-power beams can be tricky. The lasers have the potential to damage the scan head, and any reflected light can be dangerous to both the operator and the surroundings. The High-Power NanoScan can measure these beams because it uses a combination of highly reflective components with high thermal dissipation capability. It is important to manage the reflected beam so that it neither reenters the laser cavity nor sends stray beams into the surrounding area.

The High-Power NanoScan scan head has been shown to be able to handle power densities of 3.2MWcm-² at 10.6μm, the power density of a 200μm beam at 1kW. At the shorter wavelengths of the other common industrial lasers, Nd:YAG and DPSS, the upper limits are little less, due to the slightly lower reflection of the components at wavelengths around 1000nm. Visible and UV lasers can also be measured, but these will have lower limits yet.

Consult the damage thresholds charts found in the manual before placing an order or exposing any NanoScan slit profiler to a laser beam.

Software 32/64 Bit Compatibility

 NanoScan Exposure Limit Calculator

High Power NanoScan Configurations
Detector Type Power Range Wavelength Aperture Slits Scan Head Size
Pyroelectric ~1W - ~5W upper limit dependent on wavelength 190nm - > 100μm 9mm 5µm 100mm
Pyroelectric Large Aperture ~1W - ~5W upper limit dependent on wavelength 190nm - > 100μm 20mm 10µm 100mm
High Power NanoScan Operating Spaces
NanoScan Acquisition and Analysis Software
*Feature NanoScan Standard NanoScan Professional (all features in Standard plus)
Controls
Source ScanHead Select, Gain, Filter, Sampling Resolution, AutoFind, Rotation Frequency, Record Mode  
Capture Averaging, Rotation, Magnification, CW or Pulse Modes, Divergence, Gaussian Fit, Reference Position, Recompute  
Regions of Interest (ROI) Single or Multiple, Automatic or Manual, Colors  
Profiles Vertical Scale (1´, 10´, 100´), Logarithmic Scale, Z & PAN (Automatic or Manual)  
Computation: ISO 13694, ISO 11146 Dslit, (13.5%, 50% 2 User Selectable Clip Levels), D, Width ratios, Centroid Position, Peak Position, Centroid Separation, Peak Separation, Irradiance, Gaussian Fit, Ellipticity, Divergence, Total Power, Pulse Frequency, % power  
  Continuous, Rolling, Finite  
Pointing Centroid or Peak, Accumulate Mode, Beam Indicator, Graph Center, Colors  
2D/3D 2D or 3D Mode, Linear or Logarithmic Scale, Resolution, Fill Contours, Solid Surface, or Wireframe, Clip Level Colors  
Charts Chart Select, Parameter Select, Aperture Select, Update Rate, Start and Clear  
Logging File Path/Name, Delimiter, Update Rate  
Rail Setup: Com Port and Length, Connect/Disconnect, Rail Control  
Views
Profiles Displays Beam Profiles for each axis, with optional Gaussian Overlays  
Results Displays Values and Statistics for Selected results  
Pointing Displays the XY position of the Centroid or Peak for each ROI , with optional overlays and Accumulate Mode  
Charts Displays Time Charts for User-selected results  
2D/3D Displays pseudo 2D/3D Beam Profile  
M² Wizard An interactive procedure for measuring M2 by the Rayleigh Method  
File Saving
NanoScan Data Files    
Text Files    
Data Logging
Log to File    
Reports
NanoScan Report    
Automation Interface
ActiveX Automation Server    
Minimum System Requirements
PC computer running windows7 (32/64) Laptop or Desktop
Core CPU 2GHz or better
1 USB 2.0 port
At least 250MB free HDD space
1440x900 Display Resolution or greater
Add-in PCI/PCI-Express graphics card w/hardware acceleration
DVD-ROM drive
*Download the NanoScan Acquisition and Analysis Software Manual for a complete description of all Software Features

Optional Automation Interface

For customer who want to incorporate the NanoScan2 into an automated procedure or to create a customized user interface, the PRO versionscanheads include an ActiveX Automation Server that can be used by an Automation Client written in Visual Basic for Applications (VBA), C/C++ or by an application which supports ActiveX Automation, such as Microsoft Excel, Microsoft Word or National Instruments’ LabVIEW. The software package include example of programs written in Excel and LabVIEW in theautomation folder.

 
      Item Description P/N  
     
  USB HP-NS/9/5-STD High-Power Pyroelectric NanoScan with 9mm aperture and 5μm slits. Comes with the Standard Edition software. Use to measure spots 20μm and larger. Works with CW and pulsed beams with rates greater than 2kHz. Actual minimum pulse rate is dependent on beam size and scan rate. USB PH00399  
         
  USB HP-NS/9/5-PRO High-Power Pyroelectric NanoScan with 9mm aperture and 5μm slits. Comes with the Professional Edition software. Use to measure spots 20μm and larger. Works with CW and pulsed beams with rates greater than 2kHz. Actual minimum pulse rate is dependent on beam size and scan rate. USB PH00028  
         
  USB HP-NS/20/10-STD High-Power Pyroelectric NanoScan with 20mm aperture and 10μm slits. Comes with the Standard Edition software. Use to measure spots 50μm and larger. Works with CW and pulsed beams with rates greater than 2kHz. Actual minimum pulse rate is dependent on beam size and scan rate. USB PH00398  
         
  USB HP-NS/20/10-PRO High-Power Pyroelectric NanoScan with 20mm aperture and 10μm slits. Comes with the Professional Edition software. Use to measure spots 50μm and larger. Works with CW and pulsed beams with rates greater than 2kHz. Actual minimum pulse rate is dependent on beam size and scan rate. USB PH00027  
         
  Beam Profilers Beam Profilers Catalog
133 pages (8.23 MB)
  BeamGage High Power NanoScan v2 Manual
16 pages (640 KB )
  BeamGage NanoScan V2 Manual
195 pages (6.5 MB )