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  Galvo-Resonant Scan Head and Controller_Thorlabs
¤ýÀÛ¼ºÀÚ: ÀüÀçÇÊ ¤ýÀÛ¼ºÀÏ: 2018-10-10 (¼ö) 19:01 ¤ýÁ¶È¸: 107

Features

  • 8 kHz Resonant Scanner Frequency for High-Speed XY Scans
  • Accepts Beams up to ¨ª5 mm
  • Large Scan Field
    • Galvo Optical Scan Range of ¡¾15¡Æ (¡¾7.5¡Æ Mechanical Scan Range)
    • Resonant Optical Scan Range of ¡¾10¡Æ (¡¾5¡Æ Mechanical Scan Range)
  • Control using BNC Connectors for Position Control and Readout, 68-Pin National Instruments Cards and Breakout Boxes for Fine Galvo Positioning, and GUI for Resonant Mirror Tuning
  • Protected Silver Coating for High Reflectance in Visible and NIR
  • Compact Scan Head Housing is SM Threaded, 30 mm Cage System Compatible, and Post Mountable
  • NIR Window Reduces System Noise

Our LSK-GR08(/M) Galvo-Resonant Scanner contains one resonant scan mirror and one galvo scan mirror that deflect an incident laser beam in X and Y, respectively. Identical to the galvo-resonant scanner used in our Bergamo¢ç II multiphoton microscopesand complete Cerna¢ç-based confocal systems, the 8 kHz resonant frequency of the resonant scan mirror enables much higher-speed scans than a galvo-galvo system. In our Bergamo system, the scanner can achieve 30 fps at 512 x 512 pixels image resolution.


The beam can be steered via two BNC connectors for simple uni-directional scans. For fine tuning and bi-directional scanning functionality, we provide a GUI for Windows¢ç to adjust the scan range of the resonant scan mirror and the sync signal offset, as well as a National Instruments (NI) 68-pin connector to directly control and monitor the galvo scan mirror via an NI card or breakout box (not included). See the Control tab for additional information. This scanner is also compatible with Vidrio's ScanImage software.


Each scan mirror has a protected silver coating that provides high reflectance in the visible and NIR; see the Specs tab for details. Since the coating is metallic, the performance varies minimally over the scan range of the mirror. The scan head input port also features a removable NIR window that, when combined with a scan lens on the output port, greatly reduces the audible noise from the system.


Laser Scanning Cerna Beam Diagram
Click for Details

Optical diagram of the LSK-GR08 galvo-resonant scanner in a DIY Cerna¢ç laser scanning microscopy setup.

The scan head is connected to the controller using the included DB25 cable. See the Shipping List tab for additional accessories.


Mounting
The input face of the scan head has four ¨ª6 mm bores spaced for our 30 mm cage system, while the output face has internal SM1 threads and four 4-40 taps for our 30 mm cage system. By removing the NIR window installed on the input face, internal SM05 (0.535"-40) and internal SM1(1.035"-40) threads are additionally accessible. Our LCP02(/M) Cage System Size Adapter can be used to convert the 30 mm cage system to a 60 mm cage system that is capable of holding a scan lens. The scan lens needs to be positioned such that its entrance pupil is at the midpoint between the galvo and resonant mirrors. The distance from the input face to the midpoint is 28.655 mm, while the distance from the output face to the midpoint is 28.965 mm.


The scan head weighs 0.76 kg, so it may be useful to support it directly using a ¨ª1" post. Four 1/4"-20 (M6) tapped holes are located on the bottom.