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author:

Li, Yuhua (Li, Yuhua.) [1] | Wang, Shao Hao (Wang, Shao Hao.) [2] | Little, Brent E. (Little, Brent E..) [3] | Chu, Sai Tak (Chu, Sai Tak.) [4]

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Abstract:

Lasers emitting visible light based on high harmonic generation (HHG) have significantly enhanced measurement capabil-ities, enabling new applications across precision metrology, attosecond science, and ultrafast time-resolved spectroscopy. This paper discusses the theoretical framework of HHG with a focus on nonlinear effects, examining in depth second-harmonic generation (SHG) and third-harmonic generation (THG) mechanisms, as well as a thermal nonlinear model for pump stability analysis. The current state of HHG within integrated optical circuits is reviewed, with a particular emphasis on its implementation in high-index doped silica glass micro-ring resonators (HDSG MRRs). We conclude by addressing future directions for optimizing these systems to expand their appli-cability in advanced photonic technologies, highlighting their potential for innovation in both applied and fundamental sciences. © 2025, Electromagnetics Academy. All rights reserved.

Keyword:

Integrated optics Nonlinear optics Optical glass Optical pumping Photonic devices Photonic integrated circuits Ring lasers Time-resolved spectroscopy

Community:

  • [ 1 ] [Li, Yuhua]Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University, Hangzhou; 310018, China
  • [ 2 ] [Wang, Shao Hao]FZU-Jinjiang Joint Institute of Microelectronics, Jinjiang Campus, Fuzhou University, Fujian, Jinjiang; 362200, China
  • [ 3 ] [Little, Brent E.]QXP Technology, Xi’an; 710311, China
  • [ 4 ] [Chu, Sai Tak]Department of Physics, City University of Hong Kong, Kowloon Tong, 999077, Hong Kong

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Source :

Progress in Electromagnetics Research

ISSN: 1070-4698

Year: 2025

Volume: 182

Page: 27-54

6 . 1 0 0

JCR@2023

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ESI Highly Cited Papers on the List: 0 Unfold All

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30 Days PV: 2

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