Bending 90° Waveguides in Nd:YAG Crystal Fabricated by a Combination of Femtosecond Laser Inscription and Precise Diamond Blade Dicing-Reference-Cited by-同舟云学术

Bending 90° Waveguides in Nd:YAG Crystal Fabricated by a Combination of Femtosecond Laser Inscription and Precise Diamond Blade Dicing

Published:2023-01-20 Issue:2 Volume:13 Page:188
ISSN:2073-4352
Container-title:Crystals
language:en
Short-container-title:Crystals

Author:

Zha Hao¹,Yao Yicun¹^ORCID,Wang Minghong¹,Chen Nankuang¹,Zhang Liqiang¹^ORCID,Bai Chenglin¹^ORCID,Liu Tao²,Ren Yingying³^ORCID,Jia Yuechen⁴^ORCID

Affiliation:

1. School of Physics Sciences and Information Technology, Liaocheng University, Liaocheng 252000, China

2. School of Electronic and Information Engineering, Qingdao University, Qingdao 266071, China

3. Center of Light Manipulations and Applications & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China

4. State Key Laboratory of Crystal Materials, School of Physics, Shandong University, Jinan 250100, China

Abstract

In this paper, a low-loss 90°-bending design in femtosecond laser-induced double-line waveguides is theoretically proposed and experimentally demonstrated. The bending is realized based on the total internal reflection of a corner mirror (made by precise diamond blade dicing) located at the intersection of a pair of waveguides perpendicular to each other. The waveguide bending performance was birefringence free, with the insertion loss of each bending below 0.8 dB. This method provides great flexibility and has great potential for the design of integrated photonics based on femtosecond laser-inscribed crystalline materials.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Shandong Province

Liaocheng University

Publisher

MDPI AG

Subject

Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering

Link

https://www.mdpi.com/2073-4352/13/2/188/pdf

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