Photos of Liconix Helium-Cadmium Lasers

• Liconix Model 4110 Helium-Cadmium Laser Head (Gallery)

  (The following 3 photos provided courtesy of: Adam Smith (adamsmith@mediaone.net).)

  • View 01 - Overall view of Liconix 4110 laser head.
  • View 02 - Side view showing safety labels. This closeup also appears to show cathode and output end of laser.
  • View 03 - Interior view of plasma tube showing asbestos covering, gas reservoir, and cathode electrode.

  (The following 2 photos provided courtesy of: Electronic Surplus Online.)

  • View 04 - Another sample of the Liconix 4110 laser head.
  • View 05 - And its interior.

• Liconix Model 4207 Helium-Cadmium Laser Tube (Gallery)

  Here are some photos of the tube from a Liconix 4110 laser head with its clothing removed.

  (The following 9 photos and description provided courtesy of Dave (ws407c@aol.com).)

  • View 01 - Bare tube with insulation and heaters removed.
  • View 02 - Cathode-end showing Brewster stem with baffles.
  • View 03 - And another.
  • View 04 - Neon sign electrode cathode.
  • View 05 - Anode-end Brewster stem with baffles, and Cd and He reservoirs. The black round thing is a magnet.
  • View 06 - Closeup of He reservoir.
  • View 07 - Closeup of Cd reservoir.
  • View 08 - Cd heater coil and temperature sensor.
  • View 09 - He heater coil.

• Liconix Model 42XX Helium-Cadmium Laser Tube Assembly (Gallery)

  (The following 3 photos and description provided courtesy of Wes Ellison (ellison@falcon.cc.ukans.edu).)

  This is a Liconix Helium Cadmium laser tube, though which flavor I'm not sure. I believe it is of the 4200 series. By its size I would guess it to be about 10 mW. It is gas intact and the cadmium reservoir appears as having very little use. The optics are 441 nm blue (actually a deep violet blue). It requires a high voltage power supply such as the Liconix model PS-400. The tube is in a InVar resonator for stability so it should lase just as is. The mirrors can be changed to 325 nm UV simply by removing the twist lock end caps.

  • View 01 - Overall view showing HeCd laser tube mounted in three-bar InVar resonator.

  • View 02 - View from output-end.

  • View 03 - Another view.

• Liconix Model 4110 Helium-Cadmium Laser Power Supply (Gallery)

  (The following photo provided courtesy of Wes Ellison (ellison@falcon.cc.ukans.edu).)

  • View 01 - Liconix model 400PS HeCd laser power supply.

There is more information on HeCd lasers in Sam's Laser FAQ in the chapter: Helium-Cadmium Lasers.

Liconix Model 4110 Helium-Cadmium Laser Head

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Liconix Model 4207 Helium-Cadmium Laser Tube

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Liconix Model 42XX Helium-Cadmium Laser Tube Assembly

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Liconix Model 400PS Helium-Cadmium Laser Power Supply

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