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Laser Audio Transmission Project 0.8 Class II
Laser project for demonstrating light transmission of sound using a .8 mW diode laser

Wow your students with a visual demonstration of sound being transmitted over light waves from a laser beam. Simple and easy to set up, this state-of-the-art equipment package is a breeze to use. Simply insert the microphone into the jack at the rear of the laser, plug in the VAC-to-DC power adapters and aim the laser beam at the audio receiver's optical detector. Then talk, sing, hum or create almost any imaginable sound into the microphone. Equipment set-up is less than five minutes and the sounds are sent across the room and recreated within nanoseconds.

Students will be amazed that somehow voices are electronically and optically relayed from one remote point to another and converted back into sounds-without benefit of a "hard connector" in-between.

The project's audio receiver features total solid state design, adjustable volume control, self-contained and durable surface-mount electronics design, 110 VAC operation and impact-resistant enclosure. Inside the receiver are the sensitive optical semiconductor detector, amplifier, power conditioning electronics and 10 cm (4 in.) speaker.

  Laser Audio Transmission Project

Part Number: IF 512 
Price: $370.00
Sample Curriculum
Quantity



Project includes

Class II .8 mW Diode Laser
IF RL08 635



Project includes: IF RL08 635 nm Class II Diode Laser; audio receiver; high-sensitivity electronic microphone; instruction manuals; and two 110-VAC-to-DC power adapters. Also included is three meters of fiber optic cable for demonstrating the light- and information-carrying abilities of optical fiber.

LASER CLASSIFICATIONS

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.


 Specifications
 CDRH Classification  Class II
 Polarization  Linear-horizontal
 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
 Power, (min/max)  mW  .75 / .90
 Beam Diameter  mm  4.0
 Beam Divergence  mRad  1.0
 Digital Modulation  MHz 0 - 500 k
 Analog Modulation  Hz to MHz 10 - 500 k
 Mechanical  Unit  Value
 Operating Temperature  ° C  0 - 40
 Housing  cm  5.6 x 7.5 x 22