Fast lateral photovoltaic effect in ferroelectric LiNbO_3 single crystals

• 作 者: 吕志清 赵昆 刘昊 周娜 赵卉 高磊 赵嵩卿 王爱军
• 机 构: Laboratory of Fiber Optic Sensing Technology,China University of Petroleum,Beijing,International Cen
• 出 处: Chinese Optics Letters
• 发表日期: 2009年08期
• 关键词: photovoltaic ferroelectric perpendicular lithium incident pulsed inhomogeneous j

We report the fast lateral photovoltaic effect in pure congruent LiNbO3 crystal induced by pulsed laser and continuous wave laser with wavelengths of 355,532,and 1064 nm.A typical ultrafast photovoltage can be observed on the surface perpendicular to the c axis,with the rise time of 1.5 ns and the full-width at half-maximum of 1-2 ns,when the laser pulse inhomogeneously irradiates on the crystal.The peak open-circuit photovoltages show a linear dependence on the incident laser intensities.The mechanism of the photovoltaic characteristics is proposed.

We report the fast lateral photovoltaic effect in pure congruent LiNbO3 crystal induced by pulsed laser and continuous wave laser with wavelengths of 355,532, and 1064 nm. A typical ultrafast photovoltage can be observed on the surface perpendicular to the c axis, with the rise time of 1.5 ns and the full-width at half-maximum of 1-2 ns, when the laser pulse inhomogeneously irradiates on the crystal. Peak-on-circuit photovoltatages show a linear dependence on the incident laser intensities. The mechanism of the photovoltaic characteristics is proposed.