Can lasers emit anticoherent photons? 180°

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Discussion Overview

The discussion revolves around the concept of lasers potentially emitting anticoherent photons, specifically addressing whether this phenomenon could be attributed to technical equipment issues or if it is a characteristic of laser emissions. The scope includes theoretical implications for laser coherence and its applications in quantum encryption.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose that lasers, when turned off, could be described as producing equal quantities of anticoherent photons.
  • Others argue against this, stating that the discussion is about successive photons and their coherence, rather than simultaneous photons that may cancel each other out.
  • A participant mentions that the observation of anticoherent photons could challenge existing claims about the purity of laser light and its coherence, suggesting significant implications for quantum encryption.
  • There is a reference to a specific experiment that reportedly revealed this phenomenon, with mention of UC Berkeley's interest in the equipment used for the experiment.
  • One participant expresses concern about perceived bias in the presentation of the experimental results.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there are competing views regarding the nature of photons emitted by lasers and the implications of anticoherent photons.

Contextual Notes

The discussion highlights potential limitations in understanding the coherence of laser light and the assumptions underlying the claims about photon emissions. There are unresolved questions regarding the experimental setup and the interpretation of results.

Who May Find This Useful

Researchers and students interested in laser physics, quantum mechanics, and the implications of coherence in optical systems may find this discussion relevant.

RaymondKennethPetry
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http://www.physics.utoledo.edu/~ljc/photonsnap.doc

--shows a photon in stop action ...

But some of those photon samples are 180° out of phase ...

Would that be a technical equipment problem, or do lasers sometimes emit anticoherent photons?

Ray.
 
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A laser that's turned off could well be described as producing equal quantities of anticoherent photons, yes?

- Warren
 
chroot said:
A laser that's turned off could well be described as producing equal quantities of anticoherent photons, yes?

- Warren

No, it could not: We're talking about successive photons: The stop-action photon is a composite image; You're tangenting about simultaneous photons in self-cancellation non production; We are talking about six million individual extant photons of expectedly coherent phase produced successively, a few of which appear to be anticoherent: whence the thread topic.

This would have serious impact on the claims of physics for purity of laser light, coherence, stimulated emission, -theory, when anybody cares,- ... Nobody has ever thought to seek this result but it turned up on a routine, new experiment ... It would have to be factored-out of quantum encryption ...

Were you able to visit that website and turn up your brightness so you can see the question?- It was working then and is working now ... and UC Berkeley is buying his equipment to try for themselves, "at around half a million dollars a pop."

Ray.
 
Last edited:
RaymondKennethPetry said:
Were you able to visit that website and turn up your brightness so you can see the question?- It was working then and is working now ... and UC Berkeley is buying his equipment to try for themselves, "at around half a million dollars a pop."

Ray.

Well I thought that the text is a bit biased...
 

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