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Laser Circuits
Page 2 Lasers: #-KLM-Z Last Updated on:
Friday, October 16, 2009 03:42 AM
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....(electronic design added 6/07)
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 communication via serial port and more? - Lately I have been daydreaming a
lot in my laser communication course. Surfing around Google after class, I managed to
find an article on sending serial port data over a laser link. The article is rather
old (1997), but was published in a prominent Australian magazine. This is way back
when a good, red laser pointer was only $70....(added 6/07)
Laser transmitter/receiver (Aaron Cake) - 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)
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) ….(designed by David A. Johnson)
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. ….(designed by David A. Johnson)
