The sensitivity of an electro-optic (EO) field sensor depends inversely on the dielectric constant of the nonlinear crystal. In EO sensors based on lithium niobate the effective value of this dielectric constant is affected by dielectric relaxation effects and is identified with its smaller, high-frequency component. Because of this effect, the EO modulation is significantly enhanced, thus improving the field strength sensitivity.
© 2007 Optical Society of America
Original Manuscript: December 11, 2006
Revised Manuscript: January 18, 2007
Manuscript Accepted: January 23, 2007
Published: March 19, 2007
A. Garzarella, S. B. Qadri, Terence J. Wieting, Dong Ho Wu, and R. J. Hinton, "Dielectrically induced sensitivity enhancements in electro-optic field sensors," Opt. Lett. 32, 964-966 (2007)