Hello Guys
I have just started a project about building a laser ranger, using 1 nano second laser pulses.
We are using a 350nm laser which coresponds to some Tera hertz in frequency. The datasheet for the laser says that the pulse can be expected to be of gaussian type.
My question is: We are then using a avalanche photodiode to detect the pulse, but what frequency spectrum should i design my electronic amplifier for?
If i furrier transform a gaussian pulse, i get yet another gaussian in the frequency spectrum. But what about the center frequency? is it still in the tera hertz area? Or has the photodetection converted the center frequency to be around 0Hz?
I hope some of you guys got experience within this area and can help me out![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Thanks on beforehand!
I have just started a project about building a laser ranger, using 1 nano second laser pulses.
We are using a 350nm laser which coresponds to some Tera hertz in frequency. The datasheet for the laser says that the pulse can be expected to be of gaussian type.
My question is: We are then using a avalanche photodiode to detect the pulse, but what frequency spectrum should i design my electronic amplifier for?
If i furrier transform a gaussian pulse, i get yet another gaussian in the frequency spectrum. But what about the center frequency? is it still in the tera hertz area? Or has the photodetection converted the center frequency to be around 0Hz?
I hope some of you guys got experience within this area and can help me out
Thanks on beforehand!