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He-Ne Laser - Modulated 0.8 mW / Class II
Engineering Class II laser for multi-purpose use including audio transmission demonstrations

The ML 800 series of lasers is a tried and true laser design originally manufactured by Metrologic. Industrial Fiber Optics is proud to continue producing this outstanding line of lasers, incorporating our own improvements. They are based on a proven classic design using a high-quality laser tube, integrated power supply and sturdy metal enclosure. Their superior performance makes them an excellent choice for industrial or educational applications.

The ML 868 laser has the Class II power classification widely used in educational institutions. It shares the features of the ML 800 series and adds the capability for amplitude modulation of the laser beam intensity at audio frequencies. The optical output features a small beam size with low divergence. The ML 868 is one of the best and most versatile lasers in the product line.

  He-Ne Laser - Modulated

Part Number: ML 868 
Price: $575.00
Operators Manual

See Operators Manual for details on specifications, electrical jacks/plugs and set-up instructions

Other products for use with this laser:

Laser audio receiver with microphone Laser Physical Optics Kit


  • Long-life hard-seal laser tube
  • Shock-resistant internal mountings
  • Durable solid-state integrated power supply
  • Rugged aluminum housing protects the internal components
  • Standard 20-thread hole for mounting on tripod or optical bench
  • Mechanical beam block as required by CDRH
  • Power indicator lamp, fuse holder and line cord with 3-prong grounded plug
  • Rubberized underside prevents scratching and slipping on polished surfaces
  • Labels and safety features meet all U.S. CDRH regulations
  • Operates on 105 - 125 VAC. 60 Hz
  • Two-year limited warranty
  • 220 VAC upon request. Click Here to see what is available. Then select the part number required.

Suitable for experiments such as:

  • Optical refraction and reflection demonstrations
  • Tyndall's light-guiding-in-water experiments
  • Scattering of Light
  • Critical angle determination in materials
  • Convergence and divergence of lenses
  • Audio transmission demonstrations


All manufacturers of lasers used in the United States, must conform to regulations administered by the Center for Devices and Radiological Health (CDRH), a branch of the U.S. Department of Health and Human Services. CDRH categorizes lasers as follows:

 Class 1

A laser or laser system which does not present a hazard to skin or eyes for any wavelength or exposure time. Exposure varies with wavelength. For ultraviolet, .2 to .4m exposure is less than from .8 or near IR, the exposure is < 200w. Consult CDRH regulations for specific information.

 Class 2

Any visible laser with an output less than 1 mW of power. Warning label requirements yellow caution label stating maximum output of 1 mW. Generally used as classroom lab lasers, supermarket scanners and laser pointers.

 Class 3a

Any visible laser with an output over 1 mW of power with a maximum output of 5 mW of power. Warning label requirements red danger label stating maximum output of 5 mW. Also used as classroom lab lasers, in holography, laser pointers, leveling instruments, measuring devices and alignment equipment.

 Class 3b

Any laser with an output over 5 mW of power with a maximum output of 500 mW of power and all invisible lasers with an output up to 400 mW. Warning label requirements red danger label stating maximum output. These lasers also require a key switch for operation and a 3.5-second delay when the laser is turned on. Used in many of the same applications as the Class IIIa when more power is required.

 Class 4

Any laser with an output over 500 mW of power. Warning label requirements red danger label stating maximum output. These lasers are primarily used in industrial applications such as tooling, machining, cutting and welding. Most medical laser applications also require these high-powered lasers.

 CDRH Classification  Class II
 Polarization  Random
 Laser Emission Color  Red
 Laser Mode  TEM00
 Operating  Unit  Value
 Input Voltage  V 110
 Input Current  mA 80
 Wavelength  nm  632.8
 Optical Output Power, Nominal  mW  0.8 mW /
 Power, (min/max)  mW  .60 / .95
 Beam Diameter  mm  0.66
 Beam Divergence  mRad  1.25
 Digital Modulation  MHz n/a
 Analog Modulation  Hz to MHz 50 Hz-1 MHz
 Mechanical  Unit  Value
 Operating Temperature  ° C  0 - 50
 Housing  cm  32.8 x 7.2 x 7.4