Patent ID: 6166845
Filing Date: 2000-12-26
Classification: G01R

Abstract:
A probe for an electro-optic sampling oscilloscope comprising:a laser diode that generates a laser beam based on the control signal of the electro-optical sampling oscilloscope;a collimator lens that makes the laser beam into a parallel beam;an electro-optic element that has a reflecting film at the end;an isolator provided between the collimator lens and the electro-optical element that passes the laser beam that is generated by the laser diode and separates the reflected beam of the laser beam that was reflected by the reflecting film;photodiodes that convert the reflected light separated by the isolator into an electrical signal; anda condenser lens provided between the isolator and the electro-optic element, condenses the parallel beam to one point on the reflecting film, makes the reflected light reflected by the reflecting film a parallel beam again, and makes the optical axes of the light incident on the reflecting film and the light reflected by the reflecting film coincide.