Effect of applied electric field and grating spacing on performance of ring resonator

International Conference on Materials Science and Technology 2012

Singh, Ruchi^1 ; Yadav, R.A.^1 ; Singh, D.P.^1

Department of Physics, Banaras Hindu University, Varanasi

221005, India^1

关键词: A-RINGS;    Applied field;    Grating spacings;    Oscillation intensity;    Ring resonator;    Saturation state;    Two-beam coupling;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/73/1/012017/pdf
DOI  :  10.1088/1757-899X/73/1/012017

来源: IOP

【 摘 要 】

In this paper we analyze the effect of grating spacing on relative oscillation intensity and two-beam coupling gain of a ring resonator in presence of an applied electric field. The photorefractive crystal used in the ring resonator is KNSBN. It is found that the relative oscillation intensity increases exponentially with grating spacing in presence as well as in absence of the applied electric field, and approaches to a saturation state after some grating spacing. The increase is however slower under applied field condition, hence, the saturation state is reached at higher value of the grating spacing. The two-beam coupling gain decreases with grating spacing for both conditions on electric field. The decrease is however less abrupt in presence of applied electric field. It is found that the saturation state occurs for the grating spacing over 2 to 4 μm.