Available Photonics Experiments:

P5888 Laser light show
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  • DPSS Laser 532 nm
  • Principle of light scanning
  • Closed loop galvo scanner
  • Creation of images
  • Laser Light Show
  • Examples of investigations and measurements
OX Galvo scanner
The key components of the setup are the so called galvo scanner (4, 5). Simply spoken the galvo scanner works like a galvanometer where a electrical current turns the axis into a position which linearly depends on the flowing current.
Small light weight mirrors (M1, M2) are attached to the rotary axis deflecting the laser beam (1) in such a way that the outgoing beam (3) is deflected in X and Y direction.
The area which is covered depends on the deflection range of the scanner as well as from the distance of the observation point or screen to the scanner.
By applying the coordinates of a structure in a timely sequence with a repetition rate equally or higher than the resolution of the human eye standing figures can be generated. This can be used either for entertainment purposes or for engraving structures with high power laser into different materials.
Within this setup the focus is on entertainment application. For the operation professional scanners including the software for creating fanciful pattern are provided.
XP General setup
The optical components are attached to the optical rail (4). The laser light source (3) is a frequency doubled solid state laser which is mounted into a 4 axes adjustment holder (6) to align the beam with respect to the optical axes of the galvo scanners. The laser is controlled by the adaptive power supply (1). The scanner (7) are connected to the XY scanner controller (2). It contains the power amplifier for the galvo scanner . Two outputs providing the X and Y analogue signal which can be connected to an oscilloscope. In XY mode of the oscilloscope the created structure can also be monitored in this way. A third output provides the blanking signal which is connected to the laser controller. This signal is required when the laser needs to be blanked when a next separate structure shall be written.
A black screen (8) with white target rings is used as observation screen. The beams can also be directed to a more afar screen or wall for public viewing, however the laser power is not that strong so that in such cases the room should be darkened.
XP Scanner control board
This board is required to transfer the by the software created structures to the scanner controller (2). It is inserted into the PC and connected to the port (A) of the scanner controller (2). This board calculates the required X and Y coordinates for the specific structure created by the software and sends it to the scanner.
  • P5888 Laser light show consisting of:
1ED-00101Adaptive power supply APS-05
2ED-02601XY Scanner controller
3LS-01101DIMO diode laser module, 532 nm
4MC-00051Profile rail MG-65, 500 mm
5TP-02501Scanner control board and laser light show software
6XM-11101Adjustment holder, 4 axes, carrier 20 mm
7XM-25001XY scanner assembly
8XM-25101Target screen on base
 Required Options:  
 TP-02001Personal computer, X86
 TP-01001Oscilloscope 100 MHz digital, two channel