Abstract

UV-illuminated, paraelectric-phased potassium tantalate niobate (KTN) single crystals mitigate the beam deformation effects of femtosecond pulsed lasers in KTN deflectors. UV light illumination can control the amount of trapped charge present and minimize domain inversion in KTN deflectors, owing to its generated electron–hole pairs. This enables high beam quality deflection of fs pulsed lasers, with access to larger deflection angles, deflection speeds, and modulation switching ratios. These results enable the use of KTN deflectors in many fs pulsed laser applications and hasten the advancement of fs applications that require these deflection qualities.

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Anomalous bi-directional scanning electro-optic KTN devices with UV-assisted electron and hole injections

Chang-Jiang Chen, Annan Shang, Yun Goo Lee, Ju-Hung Chao, Ruijia Liu, Shizhuo Yin, and Robert C. Hoffman
Opt. Lett. 45(19) 5360-5363 (2020)

Enhanced electro-optic beam deflection of relaxor ferroelectric KTN crystals by electric-field-induced high permittivity

Chang-Jiang Chen, Ju-Hung Chao, Yun Goo Lee, Annan Shang, Ruijia Liu, Shizhuo Yin, and Robert C. Hoffman
Opt. Lett. 44(22) 5557-5560 (2019)

Higher speed, wider angle linear electro-optic deflection via domain engineered KTN crystals

Annan Shang, Ruijia Liu, Yun Goo Lee, Mohammad Ahsanul Kabir, Yaoyang Ji, Kaicheng Wu, and Shizhuo Yin
Opt. Mater. Express 13(4) 903-915 (2023)

Giant electro-optic effect in nanodisordered KTN crystals

Yun-Ching Chang, Chao Wang, Shizhuo Yin, Robert C. Hoffman, and Andrew G. Mott
Opt. Lett. 38(22) 4574-4577 (2013)

Analysis on the electric field distribution in a relaxor ferroelectric KTN crystal near field-induced phase transition using optical deflection measurements

Chang-Jiang Chen, Ju-Hung Chao, Yun Goo Lee, Annan Shang, Ruijia Liu, Stuart (Shizhuo) Yin, and Robert C. Hoffman
Opt. Express 28(21) 31034-31042 (2020)