I ONLY want right and left circular light. Can you help me?
December 4th, 2009
All PEMs are capable of generating left and right circularly polarized light. In the case of the Hinds I/FS50 PEM, you would be able modulate light in a continuously varying fashion between left-circular and right-circular at a frequency of 50 kHz.
The PEM modulates polarization as the function:
f(t) = A*cos(wt), where w = 2π *50kHz.
The polarization output of the PEM is not a step function but varies sinusoidally in time. The operating frequency of the PEM is nonadjustable, being equal to the resonant frequency of the optical element.