Second harmonic generation from precise diamond blade diced ridge waveguides

doi:10.1088/1674-1056/ac5242

中国物理B ›› 2022, Vol. 31 ›› Issue (9): 94209-094209.doi: 10.1088/1674-1056/ac5242

Second harmonic generation from precise diamond blade diced ridge waveguides

Hui Xu(徐慧)¹, Ziqi Li(李子琦)^1,2, Chi Pang(逄驰)¹, Rang Li(李让)^1,3, Genglin Li(李庚霖)¹, Sh. Akhmadaliev³, Shengqiang Zhou(周生强)³, Qingming Lu(路庆明)⁴, Yuechen Jia(贾曰辰)^1,†, and Feng Chen(陈峰)¹

1 School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;
2 Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore;
3 Institute of Ion Beam and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01314, Germany;
4 School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China

收稿日期:2021-11-08 修回日期:2022-01-18 接受日期:2022-02-07 出版日期:2022-08-19 发布日期:2022-08-24
通讯作者: Yuechen Jia E-mail:yuechen.jia@sdu.edu.cn
基金资助:
Project supported by the Taishan Scholars Youth Expert Program of Shandong Province and the Qilu Young Scholar Program of Shandong University, China.

Second harmonic generation from precise diamond blade diced ridge waveguides

1 School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;
2 Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore;
3 Institute of Ion Beam and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01314, Germany;
4 School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China

Received:2021-11-08 Revised:2022-01-18 Accepted:2022-02-07 Online:2022-08-19 Published:2022-08-24
Contact: Yuechen Jia E-mail:yuechen.jia@sdu.edu.cn
Supported by:
Project supported by the Taishan Scholars Youth Expert Program of Shandong Province and the Qilu Young Scholar Program of Shandong University, China.

摘要/Abstract

摘要： Carbon ion irradiation and precise diamond blade dicing are applied to fabricate Nd:GdCOB ridge waveguides. The propagation properties of the fabricated Nd:GdCOB waveguides are investigated through experiments and theoretical analysis. Micro-Raman analysis reveals that the Nd:GdCOB crystal lattice expands during the irradiation process. Micro-second harmonic spectroscopic analysis suggests that the original nonlinear properties of the Nd:GdCOB crystal are greatly enhanced within the waveguide volume. Under pulsed 1064 nm laser pumping, second harmonic generation (SHG) at 532 nm has been achieved in the fabricated waveguides. The maximum SHG conversion efficiencies are determined to be ～ 8.32 %·W^-1 and ～ 22.36 %·W^-1 for planar and ridge waveguides, respectively.

关键词: optical waveguides, Nd:GdCOB crystal, second harmonic generation

Abstract: Carbon ion irradiation and precise diamond blade dicing are applied to fabricate Nd:GdCOB ridge waveguides. The propagation properties of the fabricated Nd:GdCOB waveguides are investigated through experiments and theoretical analysis. Micro-Raman analysis reveals that the Nd:GdCOB crystal lattice expands during the irradiation process. Micro-second harmonic spectroscopic analysis suggests that the original nonlinear properties of the Nd:GdCOB crystal are greatly enhanced within the waveguide volume. Under pulsed 1064 nm laser pumping, second harmonic generation (SHG) at 532 nm has been achieved in the fabricated waveguides. The maximum SHG conversion efficiencies are determined to be ～ 8.32 %·W^-1 and ～ 22.36 %·W^-1 for planar and ridge waveguides, respectively.

Key words: optical waveguides, Nd:GdCOB crystal, second harmonic generation

中图分类号: (Optical waveguides and couplers)

42.79.Gn

42.70.Mp (Nonlinear optical crystals) 42.65.-k (Nonlinear optics)

Hui Xu(徐慧), Ziqi Li(李子琦), Chi Pang(逄驰), Rang Li(李让), Genglin Li(李庚霖), Sh. Akhmadaliev, Shengqiang Zhou(周生强), Qingming Lu(路庆明), Yuechen Jia(贾曰辰), and Feng Chen(陈峰). Second harmonic generation from precise diamond blade diced ridge waveguides[J]. 中国物理B, 2022, 31(9): 94209-094209.

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Second harmonic generation from precise diamond blade diced ridge waveguides

Second harmonic generation from precise diamond blade diced ridge waveguides

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