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Diode Lab Laser 0.8 mW / Class II
General purpose laser for demonstrating optical voice transmission
and optical experimentation.

Industrial Fiber Optics was the first company to recognize the benefits, and develop a product line, of diode lasers for educational use. Today, we offer five models of lab-sized (semiconductor) diode lasers and one miniature model with rechargeable batteries. Our diode lasers are unequaled to others by their many features such as high quality optics, well collimated laser beam, solid state electronics, great packaging, excellent operators manual and long warranty.

Our RL diode laser series are ideal for conducting voice and audio optical transmission experiments as well as many common laser and optical experiments. (We do not recommend diode lasers for high quality interferometric experimentation or holography.) We offer a Class II and Class IIIa power level, both of which have highly visible 635 nm red, collimated laser beams.

The IF RL08 635 is a laser with a CDRH Class II power level. Electrical connections for the analog and digital inputs are industry-standard, durable banana jacks and 3.5 mm audio jack for audio/ microphone inputs. This laser features an externally-adjustable, internal electronic amplifier with a variable gain from 1 to 50 making it suitable for low-voltage microphone outputs and higher amplitude signals from AM/FM radios and CD players.

Laser includes 110 VAC to 14 VDC power adapter and full-color operator's manual with common procedures and safety information.

  Diode Lab Laser

Part Number: IF RL08635 
Price: $300.00
Operators Manual

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

* This product is only sold through our educational distribution network.

Also available in a Class IIIa power level.

Other products for use
this with laser:

Modern Optics Kit XY Pattern Generator


  • Semiconductor diode laser for long dependable life
  • Linear polarized light beam
  • Glass collimating optics for superior optical beam quality
  • All solid-state electronic design
  • Internal overdrive protection on inputs
  • Analog and digital modulation capabilities
  • Variable gain on analog input
  • Fool-proof mechanical beam stop
  • Impact-resistant, transparent, acrylic case
  • Threaded mounts for holding lenses, filters and diffraction gratings
  • Tripod mount - 1/4 - 20 thread
  • Rubber feet on chassis bottom for adhesion on slick lab surfaces
  • Tamper-resistant screws for safety
  • Labeling and safety requirements compliant with U.S. CDRH regulations
  • 110- and 220-VAC electrical voltage options
  • 4-year warranty

Suitable for experiments such as:

  • Viewing refraction in optical materials
  • Demonstrating angle of incidence and reflection with mirrored surfaces
  • Tyndall's light-guiding-in-water experiments
  • Voice and audio transmission
  • Laser leveling experiments
  • Light shows
  • Bar code scanning
  • Particle counting
  • Polarization
  • Scattering of light by small suspended particles
  • Critical angle determination in materials
  • Convergence and divergence in optical lenses


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  Linear
 Laser Emission Color  Red
 Laser Mode  TEM00
 Operating  Unit  Value
 Input Voltage  V 10 to 15
 Input Current  mA 60 to 125
 Wavelength  nm  635
 Optical Output Power, Nominal  mW  0.8 mW /
 Power, (min/max)  mW  .75 / .90
 Beam Diameter  mm  3.2
 Beam Divergence  mRad  2.0
 Digital Modulation  MHz 0 - 500
 Analog Modulation  Hz to MHz 10 - 500
 Mechanical  Unit  Value
 Operating Temperature  ° C  -20 - 50
 Housing  cm  5.6 x 7.5 x 22