Laser-Inscribed Stress-Induced Birefringence of Sapphire

Hua Fan; Meguya Ryu; Reo Honda; Junko Morikawa; Zhen-Ze Li; Lei Wang; Jovan Maksimovic; Saulius Juodkazis; Qi-Dai Chen; Hong-Bo Sun

doi:10.3390/nano9101414

Laser-Inscribed Stress-Induced Birefringence of Sapphire

Nanomaterials (Basel). 2019 Oct 3;9(10):1414. doi: 10.3390/nano9101414.

Authors

Hua Fan¹, Meguya Ryu², Reo Honda³, Junko Morikawa^{4

5}, Zhen-Ze Li⁶, Lei Wang⁷, Jovan Maksimovic^{8

9}, Saulius Juodkazis^{10

11

12}, Qi-Dai Chen¹³, Hong-Bo Sun¹⁴

Affiliations

¹ State Key Laboratory of Integrated Optoeletronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. fanhua17@mails.jlu.edu.cn.
² School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan. ryu.m.ab@m.titech.ac.jp.
³ School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan. leo_0520@icloud.com.
⁴ School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan. morikawa.j.aa@m.titech.ac.jp.
⁵ Tokyo Tech World Research Hub Initiative (WRHI), School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan. morikawa.j.aa@m.titech.ac.jp.
⁶ State Key Laboratory of Integrated Optoeletronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. zhenze_lee@163.com.
⁷ State Key Laboratory of Integrated Optoeletronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. leiwang1987@jlu.edu.cn.
⁸ Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia. jmaksimovic@swin.edu.au.
⁹ Melbourne Centre for Nanofabrication, ANFF, 151 Wellington Road, Clayton, VIC 3168, Australia. jmaksimovic@swin.edu.au.
¹⁰ Tokyo Tech World Research Hub Initiative (WRHI), School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan. saulius.juodkazis@gmail.com.
¹¹ Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia. saulius.juodkazis@gmail.com.
¹² Melbourne Centre for Nanofabrication, ANFF, 151 Wellington Road, Clayton, VIC 3168, Australia. saulius.juodkazis@gmail.com.
¹³ State Key Laboratory of Integrated Optoeletronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. chenqd@jlu.edu.cn.
¹⁴ State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China. hbsun@jlu.edu.cn.

Abstract

Birefringence of 3 × 10 - 3 is demonstrated inside cross-sectional regions of 100 μ m, inscribed by axially stretched Bessel-beam-like fs-laser pulses along the c-axis inside sapphire. A high birefringence and retardance of λ / 4 at mid-visible spectral range (green) can be achieved using stretched beams with axial extension of 30-40 μ m. Chosen conditions of laser-writing ensure that there are no formations of self-organized nano-gratings. This method can be adopted for creation of polarization optical elements and fabrication of spatially varying birefringent patterns for optical vortex generation.

Keywords: birefringence; femtosecond laser; sapphire; stress.

Abstract

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