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Laser Circuits
Page 2 Lasers: #-KLM-Z Last Updated on:
Saturday, June 27, 2009 04:43 PM
Circuits
Designed by Dave Johnson, P.E. :
Laser Used as Vehicular Traffic Counter
This is an illustration how a laser could be used to count traffic and measure the
speed of each car passing through the sensor area. (added 7/06)
LASER/LED
LIGHT OUTPUT INTENSITY METER
This circuit uses a large 1cm X 1cm silicon PIN photo diode and a transimpedance
amplifier to measure the light power output of infrared and visible LEDs and laser
diodes. It can be modified to produce almost any milliwatts to volts scale factor.
It can be connected to either a multi-meter or an oscilloscope.
Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
Laser Communication System: This is a simple Laser communication system. It
can transmit and receive signal from any audio device.Communication distance is few
meters. All components are not critical. Transistor 2N2222 may be on the coolrib.
Laser diode is from laser pointer (added 6/03)
Laser Transmitter/Receiver: This set of two circuits from the basis for a
very simple light wave transmitter. A LASER beam is modulated and then aimed at a
receiver that demodulates the signal and then presents the information (voice, data,
etc..). The whole thing is very easy to build and requires no specialized parts execpt
for the LASER itself. .... (electronic circuit added 7/03)
