How to use the b&h tcspc in experments of quantum optics?

[liuray]

Hi everyone,
There is a b&h Time-Correlated Single Photon Counting (tcspc, spc-130) in our lab, and I use it for coincidence of spdc in quantum optics. Actually I know some about how it work, but when it comes to parameter setting of the software I know nothing.

Recently, I read some paper about quantum optics. Researchers use different coincidence device. They usually can set the window of the coincidence time and delay time. But I don't know how to set the window time and delay time as well as other parameter settings of b&h tcspc.

So, does anyone know how to set the parameter of b&h tcspc?

Please tell me, thanks in advance!

Sorry for the bad English...

 

[eljose79]

Hello,

I am a scientist who specializes in quantum optics and I am familiar with the B&H Time-Correlated Single Photon Counting (tcspc, spc-130) device. First of all, I would like to commend you for using this advanced technology in your research.

To answer your question, the parameter settings for the B&H tcspc can vary depending on the specific experiment and setup. However, there are some general guidelines that can help you in setting the parameters correctly.

Firstly, the window time or coincidence time refers to the time window during which the detector will register a coincidence event. This is typically set to a few nanoseconds, depending on the speed of your detector and the expected time delay between the two photons in your experiment.

The delay time refers to the time delay between the arrival of the two photons at the detector. This can be set manually or automatically, depending on the software of your device. It is important to set the delay time accurately to ensure that the coincidence events are properly registered.

Other important parameters to consider are the gate width, gate delay, and threshold. These parameters help in filtering out unwanted background noise and optimizing the signal-to-noise ratio. It is recommended to consult the user manual or seek assistance from the manufacturer for specific guidance on these parameters.

In addition, it is also important to calibrate your device regularly to ensure accurate measurements. This can be done by using a known light source or by performing a calibration routine provided by the manufacturer.

I hope this information helps you in setting the parameters for your B&H tcspc device. If you have any further questions, please do not hesitate to ask for assistance from your colleagues or the manufacturer. Good luck with your research!