Chengbao Yao
Yinglin Song
He Tian
Venugopal Rao Soma- 1Key Laboratory of Photonic and electric Bandgap materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, Heilongjiang, China
- 2Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang, China
- 3College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, Heilongjiang, China
- 4Advanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad, Telangana, India
Editorial on the Research Topic
Advanced nonlinear optical materials and devices
Nonlinear optical (NLO) materials have played a significant role in the advancement of various fields such as optoelectronic/photonics, optical communication, optical imaging, optical/THz frequency conversion, and optical signal processing. Several novel second-order and third-order NLO materials have been investigated in the last decade for discovering suitable and tailored properties matching the requirements of various applications [1–5]. This special issue was started with the intention to highlight the recent developments in advanced NLO materials. The issue starts with an article by Zhang et al. [6] that describes Supercontinuum generation (SCG) in fibers using a femtosecond (fs) Erbium-doped fiber laser. The authors claim their system to be efficient, compact, and inexpensive. They could achieve SCG with an approximate span of an octave in the 20 dB bandwidth (covering a range of 1,020–2,230 nm) in their hybrid highly nonlinear fibers. Ahmed et al. [7] investigated the femtosecond (800 nm, 70 fs) third-order NLO properties of four structurally unconstrained green fluorescence protein (GFP) chromophores. They observed a strong second hyperpolarizability, (γ ∼ 10−33 esu) in their molecules both experimentally and using theoretical calculations. They also report good optical limiting behavior in these chromophores. They also find impending applications in imaging and nonlinear frequency conversion. Wu et al. [8] have investigated the nonlinear absorption in a series of 98% deuterated DKDP crystals that were grown in solutions. The nonlinear absorption coefficient (β of ∼10−1 cm/GW) of those 98% deuterated DKDP crystals was obtained using the Z-scan technique with the fourth harmonic generated wavelength (266 nm) of picosecond Nd:YAG laser pulses. Hwang et al. [9] have studied the likely polarization changes and analysed the optimum polarization matching status using values from their hologram results. Further, they used them as a study to progress the efficiency of a hologram resulting from a holographic printer. These studies, though preliminary, from a small thematic-based issue clearly suggest a way forward towards the discovery of new materials and methodologies to address the ever-increasing demand for optics-based futuristic technologies.
Author contributions
All authors listed have made a substantial, direct, and intellectual contribution to the work and approved it for publication.
Conflict of interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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References
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6. Zhang S, Qiao H, Zhang T, Zhou M, Xu X. All-fiber wideband supercontinuum generation in short hybrid highly nonlinear fibers with a femtosecond erbium-doped fiber laser. Front Phys (2022) 10:915266. doi:10.3389/fphy.2022.915266
7. Ahmed MS, Biswas C, Banerjee D, Chetti P, Yang J-S, Soma VR, et al. Femtosecond third-order non-linear optical properties of unconstrained green fluorescence protein chromophores. Front Phys (2022) 10:914135. doi:10.3389/fphy.2022.914135
8. Wu P, Zhang L, Xu M, Liu B, Wei L, Li Y, et al. Research on the nonlinear absorption coefficient of 98% deuterated DKDP crystal at fourth-harmonic-generation wavelength. Front Phys (2022) 10:901370. doi:10.3389/fphy.2022.901370
Keywords: NLO materials, photonic devices, optical communications, imaging, optical signal processing
Citation: Yao C, Song Y, Tian H and Soma VR (2022) Editorial: Advanced nonlinear optical materials and devices. Front. Phys. 10:1025019. doi: 10.3389/fphy.2022.1025019
Received: 22 August 2022; Accepted: 05 September 2022;
Published: 23 September 2022.
Edited and reviewed by:
Lorenzo Pavesi, University of Trento, ItalyCopyright © 2022 Yao, Song, Tian and Soma. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Chengbao Yao, eWFvY2hlbmdiYW81QDE2My5jb20=; Yinglin Song, eWxzb25nQGhpdC5lZHUuY24=; He Tian, dGlhbmhlMTc2MTc2QDE2My5jb20=; Venugopal Rao Soma, c29tYV92ZW51QHVvaHlkLmFjLmlu