Single photon detector - Electronic Circuits Projects Diagrams Free

yctek · 27th September 2008, 10:33 PM

Hi everyone does anyone know where I can find retailers of single photon detector who also ship them to South Africa

jpanhalt · 27th September 2008, 11:06 PM

Is the problem finding the detector or shipping to RSA? We used to use LN2 cooled photomultipliers (1970) and got close to single photon sensitivity. I would not think either item would be hard to source. What methods are you considering? John

yctek · 28th September 2008, 02:10 AM

Any single photon detector within the telecommunications range (1550 nm) will be ok. I am involved in a project for data and massage encryption. Phase modulation of the data carrying single photon light is used for encryption. For phase modulation a crystal will be used which obeys Pockels effect (birefringence is proportional to the applied electric field) and single photon will be released by a laser diode. So far a laser diode has been assembled, and we are still looking for chipper retailers which cut (up to nano size) and sell crystals. Conclusively the system will have laser diode (massage), optical phase modulator (for massage encryption) and single photon detector (to read the encrypted massage)

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27th September 2008, 10:33 PM	(permalink)
yctek	Single photon detector Hi everyone does anyone know where I can find retailers of single photon detector who also ship them to South Africa

27th September 2008, 11:06 PM	(permalink)
jpanhalt	Is the problem finding the detector or shipping to RSA? We used to use LN2 cooled photomultipliers (1970) and got close to single photon sensitivity. I would not think either item would be hard to source. What methods are you considering? John

28th September 2008, 02:10 AM	(permalink)
yctek	Any single photon detector within the telecommunications range (1550 nm) will be ok. I am involved in a project for data and massage encryption. Phase modulation of the data carrying single photon light is used for encryption. For phase modulation a crystal will be used which obeys Pockels effect (birefringence is proportional to the applied electric field) and single photon will be released by a laser diode. So far a laser diode has been assembled, and we are still looking for chipper retailers which cut (up to nano size) and sell crystals. Conclusively the system will have laser diode (massage), optical phase modulator (for massage encryption) and single photon detector (to read the encrypted massage)