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SPIE Virtual Laser Exhibit: 1970 - 1979


1970s Holosonics Helium-Neon Plasma Tube

1970s Holosonics Helium-Neon Plasma Tube

Time Period: c. Mid 1970s
Technology Represented: Gas Lasers

This plasma tube features a helium reservoir with a gas fill valve. The company was a maker of ion lasers that bought the holography patents from Holotron at the end of 1976 and went bankrupt with them by the end of 1979. 




Jodon CE-15.5-1.50 HeNe Bare Tube

Jodon CE-15.5-1.50 HeNe Bare Tube

Time Period: c. 1979
Technology Displayed: Single frequency tunable HeNe




Spectra-Physics Model 133

Spectra-Physics Model 133

Time Period: 1970s
Technology Represented: Helium Neon Laser

Small low power laboratory laser




Spectra Physics Model 124 A

Spectra Physics Model 124 A

Time Period: c. 1970s
Technology Represented: External Mirror Helium Neon Laser 

15 milliwatt "High Power Lab HeNe", will run red or infrared wavelengths with different mirror sets 




1970s Spectra Physics Model 125 Helium Neon Laser System

1970s Spectra Physics Model 125 Helium Neon Laser System

Time Period: c. Early 1970s
Technology Represented: Gas Lasers

This is a very old example of this venerable laser. It is estimated to be from the early 1970s because of the vacuum tubes in the power supply, the vents in the cover, and the absence of interlocks or safety stickers. It's fully operational, giving 65mW of red output power. 




Jodon CE-15.5-1.50 HeNe Bare Tube

Jodon CE-15.5-1.50 HeNe Bare Tube
Time Period: c. 1979
Technology Displayed: Single frequency tunable HeNe




Hughes 3225H HeNe

Hughes 3225H HeNe
Time Period: c. 1978




Cylindrical tube · Small low power laboratory laser

Hughes Model 3221-CH
Time Period: c. 1978
Technology Represented: Helium Neon Laser 

Cylindrical tube · Small low power laboratory laser



Optics Technology Inc. HeNe

Optics Technology Inc. HeNe
Time Period: c. 1970s




Optics Technology Inc. HeNe

Optics Technology Inc. HeNe
Time Period: c. 1970s




Spectra-Physics Model 233

Spectra-Physics Model 233
Time Period: 1970s
Technology Represented: Helium Neon Laser

Small low power laboratory laser




General Optronics fiber-coupled semiconductor diode laser

General Optronics fiber-coupled semiconductor diode laser
Time Period: 1970s




1974 GTE Sylvania Model 941 Carbon Dioxide Laser Plasma Tube

1974 GTE Sylvania Model 941 Carbon Dioxide Laser Plasma Tube
Time Period: c. Mid-1970s
Technology Represented: Carbon Dioxide Lasers

This is a sealed tube CO2 laser for scientific applications. It features a quartz tube resonator, gallium arsinide output coupler, germanium Brewster window, a high reflector on a piezoelectric translator for fine tuning, and a very stable 5W output power. This product line was associated with the industrial gas dynamic CO2 laser line sold to Spectra- Physics.




Spectra Physics 165 Argon Ion Laser

Spectra Physics 165 Argon Ion Laser
Time Period: c. 1970s
Technology Displayed: Ion Laser




Optics Technology Inc. HeNe

Optics Technology Inc. HeNe
Time Period: c. 1970s



Optics Technology Inc. HeNe

Optics Technology Inc. HeNe
Time Period: c. 1970s



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