A method for probing the refractive index change in photorefractive crystals

作者：Fu Min; Gao Chengyong^*; Wang Xu'an; Cui Yuankai; Dai Shuwei

来源：Optica Applicata, 2013, 43(4): 731-737.

DOI：10.5277/oa130409

• Fourier transform profilometry
• refractive index change
• photorefractive effect

A method for probing refractive index changes in photorefractive crystals using an interferometric technique and digital image processing was proposed. Based on equal thickness interference in LiNbO3 crystal and Fourier transform profilometry, we obtained phase value changes in interferograms induced by a photorefractive effect, and further calculated refractive index changes. The maximal values for extraordinary light (e-light) and ordinary light (o-light) are 6.6x10(-4) and 1.2 x 10(-4), respectively.

• 出版日期2013
• 单位山东大学; 滨州学院