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0 votes
1 answer
33 views

Are 'Terahertz-pulse lasers', like, 'Terahertz time-domain spectroscopy' and such, of Terahertz-frequency or trillion-pulses-per-second?

From Phys.org: Light-controlled Higgs modes found in superconductors; potential sensor, computing uses. The mode can be accessed and controlled by laser light flashing on the superconductor at ...
Kurt Hikes's user avatar
  • 4,509
2 votes
3 answers
335 views

Top hat laser beam

Could you obtain a Gaussian profile from a square tophat laser beam? If yes what optics should be used?
Jimmy's user avatar
  • 39
5 votes
2 answers
278 views

What reflective media do laser shows use?

I am having a hard time in finding out what exact light media laser shows use. I am trying to build a laser show myself. I know that the laser light is reflected off these particles in such a way that ...
QEntanglement's user avatar