Question

1. KDP A typical electro-optic amplitude modulator is shown above. A linearly polarized beam with wavelength 2 633nm is sent a KDP crystal which is oriented such that when a voltage is applied across its faces the index of refraction along y-axis and x-axis make an angle of 45 degrees with respect to the input polarization. This results in a phase change between the x and y components of the input beam. For KDP, the electro-optic coefficient is given as r6 24.1E-12 m/V. no 1.502 and ne 1.462. a) What is the half-wave voltage? b) What is the quarter-wave voltage? c) If the crystal is 1cm long, what is the applied external electric field for the case in a)?

Answer 1

G) tedo-oplic ampitu giken, A trua Pelasid bep unth oplic Cot na: 1.50 Mc 1.462 Ca Halt- le Moltage 63 633x o 2 3.815x lo 38 15V th

Queiter- lale Noltage 14 19381/ Elect sic fieldN 38 75 てん (zu th is E: 3.875 X10 V