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Laser Pointer Audio Modulator - Laser Beam Detector ...
http://maxmcarter.com/lasrstuf/lasermodulator.html
The laser pointer audio modulator requires alignment. The alignment procedure uses the discriminator in the demodulator as a 'frequency meter'. The procedure is not difficult but should be followed carefully for best results. Figure 3 shows the …
Laser-sound: optoacoustic transduction from digital …
https://www.nature.com/articles/s41598-020-78990-z
The system is driven by digital audio data based on ΣΔ modulation, which enables the encoding of complex audio information into streams of laser-generated N-pulses. The adoption of the ΣΔ...
Laser Pointer Audio Modulator - Wiring and Mounting a ...
http://www.maxmcarter.com/lasrstuf/650laser.html
The laser is connected to and powered from the laser modulator, the module pointed at a white piece of paper about 20' (6m) away, and the lens adjusted carefully with a screwdriver for a collimated spot on the paper about the same size as the lens. The assembled module.
Printed Circuit Boards for Laser Pointer Audio Modulator ...
http://www.maxmcarter.com/lasrstuf/boards/
This page has etching masks which can be used to make printed circuit boards for the Laser Pointer Audio Modulator and Laser Beam Detector/Demodulator.The format is "bigfoot", a large 3" x 6" (8cm x 16cm), single-sided, standard DIP, no-holes (no drilling required), surface mount footprint - easy to make at home.
Modulating Lasers | Laserglow - Laserglow Technologies
https://www.laserglow.com/content/Modulating-Lasers
An acousto-optic modulator (AOM, also sometimes called a Bragg cell), is a device which can pulse the laser or alter the transmitted power at a very high frequency. Basically, they function by sending the laser beam through a crystal which is subjected to acoustic vibrations.
Transmission of Stereo Audio Signals with Lasers
https://scholarworks.uark.edu/cgi/viewcontent.cgi?article=1030&context=eleguht
With the original analog audio signal in a digital form, it may be transmitted with a laser. This process requires a fast-switching BJT or MOSFET driver that is capable of switching at the frequency of the carrier signal. The laser driver and laser beam pulse for different lengths of time as shown in the bottom plot of Figure 2.
HOW TO: Send Audio/Your Voice Over a Beam of Light : 6 ...
https://www.instructables.com/HOW-TO-Send-AudioYour-Voice-Over-a-Beam-of-Light/
It will modulate the sound signals into light, and the receiver (plugged into an amp) will turn it back into sound! If you want to modulate your voice, plug the microphone into the input on an amp, and the transmitter to the output (to external speaker) jack. The final product may look a little like the below picture. Ask Question
How do you modulate a laser module? - Knowledge - Elite ...
https://www.s-laser.com/info/how-do-you-modulate-a-laser-module-49908305.html
External modulation refers to the loading of modulation signal after the formation of laser, that is, the modulator is placed outside the laser cavity, and the modulation signal voltage is applied to the modulator, so that some physical characteristics of the modulator change phase and the modulation is obtained when the laser passes through it.
Laser Listeners - Information Unlimited
https://www.amazing1.com/laser-listener.html
Test Tone and Voice Modulator Modules Board level circuit is used with our diode lasers to produce a test tone, simplifying window bounce systems. Also modulates lasers for voice communication projects. Operates on a 9 to 12 volt battery with sensitive FET mike and level control. MODUL1K - Test Tone and Voice Modulator Kit ... $29.95
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