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New Focus 8783 GuideStar User Manual

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8783 GuideStar
II Controller
User's Manual

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Summary of Contents for New Focus 8783 GuideStar

  • Page 1 8783 GuideStar II Controller User’s Manual...
  • Page 2 EU Declaration of Conformity We declare that the accompanying product, identified with the mark, complies with requirements of the Electromagnetic Compatibility Directive, 2004/108/EC and the Low Voltage Directive 2006/95/EC. Model Numbers: 8783 mark affixed: 2012 Type of Equipment: Electrical equipment for measurement, control and laboratory use in industrial locations. Manufacturer: Newport Corporation 1791 Deere Avenue...
  • Page 3 FROM THE PURCHASE OR USE OF ITS PRODUCTS. First printing 2012 © 2012 by New Focus, Santa Clara, CA. All rights reserved. No part of this manual may be reproduced or copied without the prior written approval of New Focus.
  • Page 4 Customer shall protect the New Focus Programs and Related Materials as trade secrets of New Focus, and shall devote its best efforts to ensure that all its personnel protect the New Focus Programs as trade secrets of New Focus. Customer shall not at any time disclose New Focus's trade secrets to any other person, firm, organization, or employee that does not need (consistent with Customer's right of use hereunder) to obtain access to the New Focus Programs and Related Materials.
  • Page 5 Technical Support Contacts North America Europe New Focus Newport/MICRO-CONTROLE S.A. 3635 Peterson Way, Santa Clara, CA 95054 Zone Industrielle Telephone: (866) 683-6287 45340 Beaune la Rolande, FRANCE Telephone: (408) 919-1500 Telephone: (33) 02 38 40 51 56 Asia Newport Opto-Electronics Technologies 中国 上海市 爱都路 253号 第3号楼 3层 C部位, 邮编...

  • Page 6: Table Of Contents

    Table of Contents Introduction ..........3 Summary of GuideStar II System ........3 Safety Precautions ........4 Definitions and Symbols ............4 2.1.1 General Warning or Caution .........4 2.1.2 Electric Shock ............4 2.1.3 European Union CE Mark ........5 2.1.4 Alternating Voltage Symbol ........5 2.1.5 USB ...............5 2.1.6 Frame or Chassis ...........5 2.1.7 Waste Electrical and Electronic Equipment...
  • Page 7 4.3.2 Optical Layout .............12 Making Connections ..Error! Bookmark not defined. Software Operation ............15 4.5.1 System Set-up ............15 4.5.2 Guide Star II Tab ..........16 4.5.3 Beam Profiler Tab ..........21 4.5.4 Pointing Stability Tab ..........22 4.5.5 Stability Analysis ..........22 4.5.6 Changing Scales on Images and Charts ....23 4.5.7 Exiting the GuideStar II Application ....24 Principles of Operation ......

  • Page 8: Introduction

    1 Introduction Summary of GuideStar II System The GuideStar II laser stabilization system guarantees critical alignment of complex laser systems by compensating beam pointing and position drift. The system is based on Picomotor™ actuated mirrors which provide high-precision control with outstanding intrinsic stability.

  • Page 9: Safety Precautions

    2 Safety Precautions Definitions and Symbols The following terms and symbols are used in this documentation and appear on the Model 8783 GuideStar II controller where safety-related issues occur. 2.1.1 General Warning or Caution Figure 1. General Warning or Caution Symbol The Exclamation Symbol in the figure above appears on the product and in Warning and Caution tables throughout this document.

  • Page 10: European Union Ce Mark

    2.1.3 European Union CE Mark Figure 3. CE Mark The presence of the CE Mark on Newport Corporation equipment means that this instrument has been designed, tested and certified compliant to all applicable European Union (CE) regulations and recommendations. 2.1.4 Alternating Voltage Symbol Figure 4.

  • Page 11: Waste Electrical And Electronic Equipment (Weee)

    2.1.7 Waste Electrical and Electronic Equipment (WEEE) Figure 7. WEEE Directive Symbol This symbol on the product or on its packaging indicates that this product must not be disposed with regular waste. Instead, it is the user responsibility to dispose of waste equipment according to the local laws.

  • Page 12: Warnings And Cautions

     Follow precautions for static sensitive devices when handling this equipment.  This product should only be powered as described in the manual.  There are no user-serviceable parts inside the Model 8783 GuideStar II controller.  Adhere to good laser safety practices when using this equipment.

  • Page 13: Summary Of Warnings And Cautions

    2.2.3 Summary of Warnings and Cautions The following are definitions of the Warnings, Cautions and Notes that are used throughout this manual to call your attention to important information regarding your safety, the safety and preservation of your equipment, or an important tip. The following general warning and cautions are applicable to this instrument: 2.2.4 Additional power supply warnings This product is equipped with a three prong plug.

  • Page 14: Getting Started

    New Focus immediately. Carefully open the box and save the shipping material for later use. Parts List The following is a list of parts included with the Model 8783 GuideStar II controller:  8783 GuideStar II controller  CD with Software Drivers and Utilities, User’s Manual, Start Up Guide.

  • Page 15: Electrical Requirements

     Have a qualified electrician verify the wall socket that will be used is properly polarized and properly grounded.  Provide adequate distance between the Models 8783 GuideStar II Controller and adjacent walls for ventilation purposes. Do not let any other equipment blow hot air towards the unit.

  • Page 16: System Operation

    4 System Operation System Overview GuideStar II is a closed-loop beam stabilization system in which cameras measure beam position at two points along the beam path, while two preceding mirrors actuated by Picomotors keep these two positions steady. The centroid information from each camera is processed and fed back to the X and Y control of each mirror mount in a generalized manner via a 16-element array (called the “Motion Matrix”).

  • Page 17: System Set Up

    System set up The Quick Start Guide contains information to set up the system. Please refer to the quick start guide to install software, configure the cameras, and connect components with the included cables. Additional details on hardware set up and software operation are found below.
  • Page 18 Typical values might be 50 cm between mirrors, 50 cm between cameras, and 10 cm between Mirror 2 and Camera 1. Note that the system can tolerate a wide range of deviation from these guidelines. In general, however, a larger spacing between cameras will allow for tighter pointing control, since the maximum pointing drift under closed-loop operation will be determined by the ratio of the Target size to the separation between the cameras.
  • Page 19 4.3.3 Connecting Hardware to the Controller Figure 11 shows how to connect the mirrors and cameras to the GuideStar II Controller. These connections should all be made prior to launching the GuideStar II application. Failure to make these connections prior to opening the application may lead to an error message.

  • Page 20: Software Operation

    Software Operation 4.4.1 System Set-up The first time the application is launched it will automatically open the System Set-up window and display the Camera Check tab: Figure 12. System Set-up window available through GuideStar II Tab. This window cannot be closed until steps 1 - 4 are completed. If blocking the beams to the Camera 1 causes the Camera 2 image to disappear in the GuideStar II display (or vise-versa), then the camera IDs should be swapped.

  • Page 21: Guide Star Ii Tab

    Figure 13. Example physical layout of mirrors and cameras for GuideStar II system. In Step 5, you will set the target position. To do this, click the Set Target Position button. This will ensure that the system will return to the original alignment after the motion acquisition.
  • Page 22 camera; buttons for System Set-up, Camera Settings, and Motion Settings; indicator lights and a Lock On/Off button; and two controls for manually activating the motors: Figure 14. Screenshot of information and buttons available under GuideStar II Tab. This button will turn off Lock and open the same System Set-up described Section 4.4.1.
  • Page 23 This button will turn off Lock and open the Camera Settings window: Figure 15. Camera Settings Window available through the GuideStar II Tab. o Exposure Times should be set so that Max Value for each camera is below 255. The sensors saturate at Max Value = 255. o Pixel Clock: At high Pixel Clock values (>20-25), a Pixel Clock Error may occur.
  • Page 24 This button will turn off Lock and open the Motion Settings window: Figure 16. Motion Settings Window available through the GuideStar II Tab. o Set Target Position This button will reset the target centers to the current beam locations. This can be executed without the need to re-acquire the Motion Matrix.
  • Page 25 o Frames to Average Over Determines the level of running averaging for centroid locations used in the control algorithm. As with Loop Gain, it is recommended that one start with the default value and adjust it to achieve a well-behaved (no ringing, relatively fast) return of the beam to the Inner Target.

  • Page 26: Beam Profiler Tab

    4.4.3 Beam Profiler Tab Under the Beam Profiler tab basic beam profiling information is displayed. Also available is the Camera Settings button and a Pause button. The Full Size button under each image will enlarge the image. This can be reversed by hitting Esc on the keyboard.

  • Page 27: Pointing Stability Tab

    4.4.4 Pointing Stability Tab The Pointing Stability tab shows automatically generated graphs of the beam position data being gathered by the cameras. You can customize how much data is taken and save it to a .txt file. Figure 19. Example automatically generated graphs of beam position data found in Pointing Stability Tab 4.4.5 Stability Analysis The Stability Analysis tab contains the individual data plots for X1, Y1, X2, Y2.

  • Page 28: Changing Scales On Images And Charts

    Figure 20. Example of individual plots of raw stability data collected for X1, Y1, X2, Y2 available in Stability Analysis tab 4.4.6 Changing Scales on Images and Charts To change the scale of a chart: Autoscaling of the X and Y axes can be turned on and off by right-clicking on the graph or axis.

  • Page 29: Exiting The Guidestar Ii Application

    4.4.7 Exiting the GuideStar II Application To exit the GuideStar II application, click on the Exit button in the lower right corner. Then, the GuideStar II window can be closed by either clicking on the close box in the upper right corner of the window, or by going to File  Exit in the upper left corner.

  • Page 30: Principles Of Operation

    5 Principles of Operation GuideStar II Algorithm Theory The control algorithm moves each Motor one at a time in accordance to the Lock Equation derived from the Inverse Movement Matrix, the difference between the current beam positions and the target beam positions and the gain coefficient. Movement Matrix A Movement Matrix A ...

  • Page 31: Acquiring The Motion Matrix

    Lock Single Step Equation Determines the movement for each motor from the difference between the current beam positions and the Target beam positions     MM1X MM1X CAM1X CAM1X     gain MM1Y MM1Y CAM1Y CAM1Y ...
  • Page 32     CAM1X CAM1X MM1X MM1X   CAM1Y CAM1Y   CAM2X CAM2X   CAM2Y CAM2Y       CAM1X = CAM1X = CAM1X = A11 . A11 . A11 . MM1X MM1X MM1X ...

  • Page 33: Frequently Asked Questions

    6 Frequently Asked Questions What is the best layout of the mirrors and cameras? The best physical layout of the Picomotor Mirror Mounts (MM) and Cameras (CAM) is such that the beam first strikes and is reflected off MM1 then MM2 with a small fraction of the light intensity then picked off for CAM 1 and CAM 2.
  • Page 34 How do I get a low power beam into the camera? The power required to saturate the camera is generally very low so we provide ND-1,2, and 4 filters to attenuate any input and in the camera adjustments the exposure time can be varied by a factor of 1000 to further attenuate or optimize the measured intensity level.
  • Page 35 First make sure that the each Picomotor is connected to its appropriate port on the Model 8783 GuideStar II Controller front panel. If so, it has been found that the best course of action is to un-install the GuideStar II application and all associated programs/files, then re-install.

  • Page 36: Maintenance And Service

    7 Maintenance and Service Warranty New Focus, Newport Company, guarantees its lasers to be free of defects for one year from the date of shipment or for 3000 hours of operation, whichever comes first. This is in lieu of all other guarantees, expressed or implied, and does not cover incidental or consequential loss.
  • Page 37 3. Description of the problem. If the instrument is to be returned to New Focus, you will be given a Return Material Authorization (RMA) Number, which you should reference in your shipping documents. Please fill out a copy of the service form, located on the following page, and have the information ready when contacting Newport Corporation.

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