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Ordering Information

Beam Cube User Guide

8 Ordering

Information

Beam Analysis Systems for Industrial Lasers

Beam Cube

Standard Beam Cube system for beam profile,
temporal pulse shape and power and single shot
energy. To be used with the Ophir power meter
and oscilloscope of user’s choice. Includes
interchangeable -100mm lens assembly. With
SP503U 9.9um pixel size Spiricon camera.

SP786015

Beam Cube 620 version

High Resolution Beam Cube system for beam
profile, temporal pulse shape and power and single
shot energy. To be used with the Ophir power
meter and oscilloscope of user’s choice. Includes
interchangeable -100mm lens assembly. With
SP620U 4.4um pixel size Spiricon camera.

SP786016

USB Interface

USB Module that turns your PC or laptop into a
power/energy meter and enables you to present
the power and single shot energy measurements
of the Beam Cube on your PC

7Z01200

PC oscilloscope

200us risetime oscilloscope to turn your PC into an
oscilloscope displaying the temporal pulse shape.
Uses PC or laptop USB port.

SPE10008

Replacement -100mm

lens assembly

-100mm lens assembly for Beam Cube (1 included
with system)

SPZ08256

Replacement -50mm

lens assembly

-50mm lens assembly for Beam Cube

SPZ08255

revB1.31-U2.30-1/ 27.5.08 eg/new

revB1.31-U2.30-2/ 26.8.08 eg/added

Beam Cube 620 version

revB1.31-U2.30-3/ 31.8.08 eg/corrected excel s/w to Beam
cube

revB1.52-S1.10-1/09.2.09 eg/corrected temporal pulse from
200 to <5us and updated whole spec to match catalog 2009,
changed from USBI to StarLab s/w

Beam Cube User Manual

Ophir P/N 1J06118

Rev B1.52-S1.10-1

42

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Summary of Contents for Beam Cube

Page 1: ...Composite C M Y CM MY CY CMY K Beam Cube INDUSTRIAL LASER BEAM ANALYZER USER MANUAL Beam Cube Beam Cube w w w o p h i r o p t c o m OPHIR OPTRONICS ...

Page 2: ...Rev B1 31 U2 30 1 March 12 2008 Initial Revision ...

Page 3: ...gistration and Installation 10 3 2 StarLab Software Installation optional 10 3 3 Oscilloscope Software Installation Optional 11 4 Setting up for Measurements 12 4 1 Positioning the Beam Cube and the Laser Under Test 12 4 2 Electrical Connections 13 4 3 Setup for Beam Profiling and Operation 14 4 4 Setup for Power Energy Measurement using the USB Interface 18 4 5 Setup for Temporal Pulse Shape Meas...

Page 4: ...eport Generation 28 5 9 Beam Wander 29 5 10 3D Display 29 5 11 Video Data Control 30 5 12 Region of Interest 31 5 13 Major Minor Axes 32 5 14 Automation 33 6 Power Measurement 34 6 1 Starting and Ending a StarLab Application Session 34 6 2 Configuring the Display for Power Readings 35 7 Specifications 40 8 Ordering Information 42 ...

Page 5: ...eam Profiling capabilities of the Spiricon series of cameras with the power and temporal pulse shape measurement capabilities of Ophir s BA series The user should also check Ophir s Web page for the latest updates and FAQs not covered in this manual 5 Note This manual is a companion to the BeamStar User Manual that is included in the Beam Cube package All features of the BeamStar software are avai...

Page 6: ...ry USB 2 0 port Windows XP SP2 Windows Vista 32 Free USB port on the PC 6 Note Windows stores all installation information in the Windows Registry Therefore when installing any of the software components or when attaching the Beam Cube or USB Interface for the first time the user must be logged in with Administrator Privileges ...

Page 7: ...ontains the following components Spiricon SP503U camera for Beam Profiling or SP620U camera in Beam Cube 620 version 2 Beam Splitters to reduce the power intensity of the laser beam as it hits the Spiricon camera by a factor of 400 1 A negative imaging lens to expand the size of the laser beam by a factor of 2 3 while moving the focal point out thereby enabling profiling of focal spots as small as...

Page 8: ...iricon SP camera An Ophir 100C power meter capable of measuring 100W continuously and 150W for short periods 8 Figure 1 View of components of Beam Cube Assembly Beam splitters SP beam profiler unit Attenuators 2 nd rod 1 st rod Optical trigger Ophir 100C power meter Exchangeable input negative lens 2 3 Beam Cube External Interfaces The Beam Cube Assembly has 5 external interfaces Entrance window f...

Page 9: ...ser Guide System Components and Setup Connector to attach the power head to power meter or USBI device BNC Output to oscilloscope Handles to adjust the Variable Attenuator Figure 2 Beam Cube with complete casing 9 ...

Page 10: ...are Wizard Press Cancel 3 Insert the BeamStar FX distribution CD ROM in the CD ROM drive 4 To start the installation locate and double click the setup icon setup exe 5 When the Choose Installation Type window appears select Standard 10 Note You must have administrative privileges to install the software and register the Beam Cube s Spiricon SP camera 3 2 StarLab Software Installation optional If y...

Page 11: ... The software installation is complete You can now connect the USBI or Pulsar device 3 3 Oscilloscope Software Installation Optional The Beam Cube can be connected directly to an oscilloscope thereby enabling temporal pulse width analysis Users may wish to see the temporal pulse shape on their PC instead This can be done by using the optional PC oscilloscope P N SPE10008 Install the oscilloscope a...

Page 12: ...d positioning of the Beam Cube we have provided on the CD included an Excel program Setup Program for YAG FSA and Beam Cube to help you calculate where to place the Beam Cube There are two positions given the position that will show the focal spot and the position where the image will be the largest it can be within the size of the camera CCD 12 Note 1 The same Excel program works for Beam Cube ex...

Page 13: ...o 36 7mm from the source to see from the largest sized beam before the focal point to the smallest at the focal point Place the Beam Cube with the input lens directly beneath the laser Use the leveling feet if necessary to level the unit to be exactly perpendicular to the beam Using the Excel program provided place the Beam Cube at a distance midway between the limits given The negative lens in th...

Page 14: ... between the USBI and the PC 3 Oscilloscope Connect the BNC to BNC cable between the scope output of the Beam Cube and the oscilloscope If you are using the PC scope connect to the PC scope to the PC with the USB cable Figure 3 Electrical Connections of Beam Cube when used with USB Interface and PC scope 14 4 3 Setup for Beam Profiling and Operation Note Configuring the camera for the specific las...

Page 15: ... trouble is encountered in configuring the camera please turn to the BeamStar User Manual Quick Start Instructions 1 Position Beam Cube directly under laser at the correct distance from the output lens of the laser as calculated in the Excel program Setup Program for YAG FSA and Beam Cube we have provided on the CD included 2 Connect up as in Figure 3 Electrical Connections of Beam Cube above 15 ...

Page 16: ...er mode to internal by deselecting all the Trigger options 6 If working with a pulsed laser select the BeamStar Photodiode Accessory and the External Trigger options Note The default setting when selecting trigger mode is pulse widths of 3ms If your pulses are longer than that adjust the Speed to be somewhat longer than your pulse width see Figure 5 below 7 If the laser s pulses are shorter than 2...

Page 17: ...10W Adjust the attenuator rods so that the 1st rod is all the way out and the 2nd rod all the way in See fig 1 10 Adjust the Beam Cube position to get the beam size and position you want Raise the laser power to the level you want while adjusting the attenuator rods so that the camera gain is in the region noted in Figure 5 17 ...

Page 18: ...he suggestion is to add a filter then increase the attenuation 4 4 Setup for Power Energy Measurement using the USB Interface If using an Ophir power meter connect between the Beam Cube and your power meter using the included D15 D15 cable and follow the instructions in your power meter manual 1 Connect between the power meter output of the Beam Cube and head input point on the USBI instrument wit...

Page 19: ...instructions should be adapted to the oscilloscope actually used to perform temporal pulse shape measurement 1 Perform all steps of Setup for Power Energy Measurement described above This is necessary in order to provide an electrical power supply for the temporal pulse module inside the Beam Cube to operate 2 Connect the PC oscilloscope module to the USB input of the laptop or desktop using the U...

Page 20: ...o auto the input to DC and channel B to off Set the trigger to Auto 5 After you see the pulse shape set the voltage scale to the best value Set the trigger to ChA and the trigger level to a point that insures stable readings 6 If the signal is too high attenuate it using the Variable Attenuator levers that are on the side of the Beam Cube 7 As a further check that everything is working properly lo...

Page 21: ...ion 5 1 Default Startup With the camera active when you start the BeamStar program you will see a display similar to that of Figure 9 below Unless you ve used the Start application with last settings option this is the default startup with a working camera Figure 9 Default start up display BeamStar can display any combination or number of displays and profiles Each display is controlled by its own...

Page 22: ...lues 1 5 2 Add Panel Activate a graphic calculation or control display Figure 10 Add dialog form The Add form button is available from any of the pages of the Control Panel Clicking one of the buttons when it is enabled adds that activity as another page to the Control Panel form If a display or numerical activity is already present BeamStar adds a different suffix number to the 22 ...

Page 23: ...e is allowed If one of these buttons is enabled then that activity can be started 5 3 2D Display A 2D XY projection bird s eye view of the laser beam as detected by the BeamStar camera Figure 11 Example of 2D Display with Centroid and 4σ beam width Markers selected Includes markers for centroid and peak location Graphical display of 4σ beam width Can be zoomed up to 1600 Linear distance between tw...

Page 24: ...gle Option to save data or picture to a file 5 4 Numerical Values Textual Display of Beam Analysis Calculations Figure 12 Numeric display DefaultXY left and Major Minor axis alignments Centroid and Peak Location Track total power Peak Power Density and Peak to Average Ratio Beam Widths Ellipticity and Angle of Rotation 2D Gaussian and 2D Top Hat Can be set to Default XY or Major Minor Axes Configu...

Page 25: ...gion of Interest is in affect calculations will only be on pixels that are within the Region of Interest 5 5 Profile Graphs Display the power distribution height of the pixels of the laser beam as a function of only one axis or measurement Figure 13 Example of a Line Profile along the Major Axis 25 ...

Page 26: ... Profile Display can be zoomed by click drag release of mouse If Region of Interest is in affect display will be limited to pixels that are within the Region of Interest 5 6 1D Gaussian Fit Calculates a best fit Gaussian curve of the laser beam under test Figure 14 1D Gaussian Fit with Pass Fail option active Axis can be X Y Major or Minor Select Line or Sum Profile for fit Numeric and Graphic dat...

Page 27: ...mited to pixels that are within the Region of Interest 5 7 1D Top Hat Fit Calculates the Top Hat approximation of the laser beam under test Figure 15 Top Hat fit example with Pass Fail option active Axis can be X Y Major or Minor Select Line or Sum Profile for fit Numeric and Graphic data presented in one display Profile Display can be zoomed by click drag release of mouse Configurable Pass Fail p...

Page 28: ...els that are within the Region of Interest 5 8 Report Generation Generate a performance report of the laser under test Figure 16 Report Generator dialog box Click the icon or select the Menu item File Generate Report Report can be a full performance report or Pass Fail only Select between text graphic or mixed format reports 28 ...

Page 29: ...y of centroid instability over time Time scale selection from seconds to hours Option to save numeric results to log file Display wander in microns or microradians Figure 17 Beam Wander display set to AutoScale 5 10 3D Display 3D projection of the power distribution of the laser under test 29 ...

Page 30: ...e 18 3D Display Zoom Pan and Rotation of display by mouse control Graphic results only No beam analysis calculations 5 11 Video Data Control Record camera output frames for future analysis Video files can be played back with the BeamStar application 30 ...

Page 31: ...t measurements or when the optical setup of the test causes unwanted reflections on the BeamStar camera Figure 19 Region of Interest control tab and example of 2D Display Activated by clicking the icon Easily controlled from its own control tab or by mouse control within the 2D display Affects Numeric Results Profiles 1D fits and Beam Wander displays 31 ...

Page 32: ...rect measurement of non XY aligned laser beams Affects 2D Display Profiles Numeric Results and 1D Fits Set the active axes from one location for the whole application by pressing the toolbar icon Figure 20 Major and Minor lines drawn through the centroid of a rotated laser beam 32 ...

Page 33: ... and to integrate them into their client applications This interface makes use of NET technology After the BeamStar application is installed the Automation Examples folder can be accessed This folder contains examples of client applications that are provided in VB NET VB6 and LabVIEW 7 0 A full reference manual describing the BeamStar interface is provided as well ...

Page 34: ...ed USB Interface CD manual For power measurement using an Ophir power meter consult the power meter manual 6 1 Starting and Ending a StarLab Application Session To start a StarLab session From the desktop double click The StarLab application opens On startup StarLab searches for devices If only one is found as in the present case StarLab automatically opens in full screen mode and begins operation...

Page 35: ...oelectric head in power mode Thermopile heads in power mode and photodiode heads are configured in exactly the same way The following sections explain the display options and how to select them Note To take measurements in power mode when working with a thermopile or pyroelectric head select Power from the Mode drop down list in the Measurement Parameters Area 35 ...

Page 36: ...ding to your selection 9 In the Time Period field use the arrows to set the time period of the Display Area in hours minutes and seconds The graph shown in the Display Area adjusts according to your selection 6 2 2 6 2 3 Configuring Measurement Settings in Power Mode This section explains how to select the laser wavelength and configure the range and an average reading in power mode Selecting the ...

Page 37: ...when you know the approximate range of the expected readings Select the range from the Range drop down list in the Measurement Parameters Area The instrument will configure itself according to the selected range Figure 23 Range Drop Down List To configure the range when the range of the expected readings is not known or if highly varying readings are expected Select AUTO from the Range drop down l...

Page 38: ... average mode the instrument displays the average of the readings spanning from the last time average mode was activated to the present Once the time period of the average is reached the average becomes a running average spanning the average period backwards in time For example if the average period is 30 seconds at 15 seconds the average is over 15 seconds at 30 seconds the average is over 30 sec...

Page 39: ...User Guide Power Measurement 39 6 2 6 Disabling Averaging You can disable averaging from the Average drop down list To disable averaging Select None from the Average drop down list in the Graph Configuration Area ...

Page 40: ...er control Peak and Centroid position tracking 2D and 3D contour map Sophisticated noise and background control Best fit to gaussian or top hat profile 3D displa viewable from any angle or elevation Store and recall screens in single or video fashion 3 different measures of beam width of peak 4 sigma and 90 10 knife edge Save numerical data files of profiles Log data with time Full on line instruc...

Page 41: ...faces is not exceeded b The Beam Cube will not resolve pulses of energy below 20mJ unless the pulse rate is high If the energy deposited in 1 50th of a second exceeds 20mJ then the unit will be able to show the pulses even though the individual energies are below 20mJ c If the beam power or energy density on the entrance window exceeds specifications the window can be removed and not used assuming...

Page 42: ...P786016 USB Interface USB Module that turns your PC or laptop into a power energy meter and enables you to present the power and single shot energy measurements of the Beam Cube on your PC 7Z01200 PC oscilloscope 200us risetime oscilloscope to turn your PC into an oscilloscope displaying the temporal pulse shape Uses PC or laptop USB port SPE10008 Replacement 100mm lens assembly 100mm lens assembl...

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