Article
Materials Science, Multidisciplinary
Otto Cranwell Schaeper, Johannes E. Froch, Sejeong Kim, Zhao Mu, Milos Toth, Weibo Gao, Igor Aharonovich
Summary: This study demonstrates the fabrication of functional photonic devices based on 4H Silicon Carbide using a Faraday cage-based oblique angle etch method. The fabricated suspended microring resonators exhibit high-quality factors, showing potential for enhancing the properties of SiC in integrated on chip quantum photonics in the future.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Engineering, Electrical & Electronic
Victor Kopp, Jongchul Park, Jonathan Singer, Daniel Neugroschl, Azriel Z. Genack
Summary: By passively combining sixty-one lasing fiber channels in a monolithic optical resonator array, researchers achieved an output power above 200W at a two-micrometer wavelength. The study found that the central intensity enhancement improves as the number of channels increases, which is an important step towards a passively combined multichannel all-solid-state laser system.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Okan Koksal, Junyeob Song, Zi Wang, Lu Chen, Wenqi Zhu, Amit Agrawal
Summary: This study introduces a method to fabricate anti-reflective metasurfaces using a single nanolithography step after deposition of multiple dielectrics onto a substrate. Compared to conventional equivalents, anti-reflective metasurfaces offer better transmission efficiencies and reduce spurious diffraction and higher-order scattering. The results show improved focusing efficiencies for both low and high numerical apertures.
LASER & PHOTONICS REVIEWS
(2023)
Article
Engineering, Electrical & Electronic
Xiaolang Qiu, Chao Wang, Jian Li, Chuanchuan Li, Xinyu Xie, Yongli Wang, Xin Wei
Summary: We designed and demonstrated a temperature-stable, wide-tuned, high-power VECSEL. By optimizing the quantum well and BF curve, we obtained a VECSEL with a wide adjustable range, high power, and temperature stability. This is of great significance for the design of VECSEL with wide tuning range, high power, and good temperature stability.
IEEE PHOTONICS JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Sihai Luo, Bard H. Hoff, Stefan A. Maier, John C. de Mello
Summary: This study evaluates some of the most promising techniques for nanogap fabrication, including traditional methods like photolithography, electron-beam lithography, and focused ion beam milling, as well as newer methods using novel electrochemical and mechanical means for patterning. The physical principles behind each method are reviewed, and their strengths and limitations for nanogap patterning are discussed in terms of resolution, fidelity, speed, ease of implementation, versatility, and scalability to large substrate sizes.
Article
Nanoscience & Nanotechnology
Henry S. Carfagno, Pedro David Garcia, Matthew F. Doty
Summary: This study develops a method to analyze and visualize positional, size, and shape disorder in periodic structures in photonic systems. It shows selectivity for disorder type and sensitivity down to less than 1%. The method can be applied to more complex shapes and provides a powerful tool for process development and quality control.
Article
Optics
Ajit Jha, Linga Reddy Cenkeramaddi, Santiago Royo
Summary: We propose a generalized mathematical model and algorithm for the multi-cavity self-mixing phenomenon based on scattering theory. The model recursively simulates individual cavity parameters to capture the interference from multiple external cavities. The investigation reveals that the equivalent reflection coefficient of coupled cavities depends on both the attenuation coefficient and the phase constant.
Article
Chemistry, Multidisciplinary
Arianne Brooks, Xiao-Liu Chu, Zhe Liu, Ruediger Schott, Arne Ludwig, Andreas D. Wieck, Leonardo Midolo, Peter Lodahl, Nir Rotenberg
Summary: Tailored photonics cavities are used to enhance light-matter interactions, creating a fully coherent quantum interface. An integrated microdisk cavity containing self-assembled quantum dots is reported here, showing coherent routing of photons and clear signatures of coherent scattering by the quantum dots. Control of photon routing between access waveguides is achieved by tuning the quantum dot and resonator detuning or adjusting the excitation beam strength, with a critical photon number less than one photon per lifetime being required.
Article
Chemistry, Multidisciplinary
Haonan Chang, Zhenyao Li, Wenkai Lou, Qifeng Yao, Jia-Min Lai, Bing Liu, Haiqiao Ni, Zhichuan Niu, Kai Chang, Jun Zhang
Summary: Researchers have designed a THz mechanical frequency semiconductor pillar microcavity optomechanical device based on a GaAs/AlAs nanophononic superlattice, by introducing acoustic topological interface states. The device enables the quantum ground state to be reached at high temperatures, and achieves frequency matching between optical cavity modes, providing potential for laser cooling and low threshold phonon lasing.
Article
Chemistry, Multidisciplinary
Tsan-Wen Lu, Zhen-Yu Wang, Kuang-Ming Lin, Po-Tsung Lee
Summary: This report introduces a 1D photonic crystal nanocavity with waveguide-like strain amplifiers for highly sensitive pressure and position optical sensors. It demonstrates the nanocavity's ability to detect minute position differences and the distinct behaviors in wavelength shifts when applying localized pressure. The feasibility of using the strain amplifier as an effective waveguide for extracting the sensing signal is also proposed and validated.
Article
Optics
Chao Kai, Pu Li, Yi Yang, Bingjie Wang, K. Alan Shore, Yuncai Wang
Summary: In this study, a single-node photonic reservoir computing approach is proposed to forecast the chaotic behavior of external cavity semiconductor lasers using observed data. By investigating the effect of meta-parameters on the prediction performance, an optimal parameter space is identified for forecasting optical-feedback-induced chaos. Simulation results show that the proposed method can continuously predict chaotic time series for over 2 ns with a normalized mean squared error lower than 0.1. This hardware-friendly approach provides a roadmap for optimal prediction performance in delay-based photonic reservoirs.
Article
Multidisciplinary Sciences
Chao Xiang, Joel Guo, Warren Jin, Lue Wu, Jonathan Peters, Weiqiang Xie, Lin Chang, Boqiang Shen, Heming Wang, Qi-Fan Yang, David Kinghorn, Mario Paniccia, Kerry J. Vahala, Paul A. Morton, John E. Bowers
Summary: Achieving high output power and low noise integrated lasers using Si/SiN heterogeneous platform with Hertz-level linewidth has been demonstrated. This paves the way for fully integrating low-noise silicon nitride photonics in volume. The high-performance lasers on SiN with tens of milliwatts output power and sub-kHz fundamental linewidth address issues of mode transition loss, cavity design, and fabrication process, marking a milestone towards fully integrated low-noise silicon nitride photonics platform.
NATURE COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Vyacheslav S. Golovin, Sergey O. Slipchenko, Aleksandr A. Podoskin, Alena E. Kazakova, Nikita A. Pikhtin
Summary: This study investigates the basic principles of quantum well semiconductor laser design optimization and the current pumping requirements for generating optical pulses by gain switching. The experiment finds that there exist optimal values of optical confinement factor, resonator length, and current pulse amplitude for achieving maximum peak output power. Moreover, the study reveals that the optimal resonator length strongly depends on the target pulse width.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Ru Wang, Chunfeng Wang, Yi Ma, Jianli Sun, Peiguang Yan, Chunxiang Xu, Caofeng Pan
Summary: Plasmonic nanolasers, which go beyond the diffraction limit, have gained significant attention. However, the high optical confinement caused by the plasmon effect also leads to metal absorption loss, increasing the pump threshold. This paper discusses the factors affecting the threshold, reviews experimental efforts, explores applications, and discusses approaches for threshold reduction and future possibilities.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Wei Wen Wong, Chennupati Jagadish, Hark Hoe Tan
Summary: III-V WGM micro-cavity lasers are widely used in modern optoelectronic devices, with excellent optical performance. This review presents advances in fabrication techniques, emission outcoupling methods, and practical applications. Highly-scalable bottom-up methods have shown potential for fabricating low-loss WGM lasers. Various techniques have been developed to outcouple WGM emission into waveguides or direct it into free-space with small beam divergence. In addition to serving as integrated photonic components, III-V WGM micro-cavity lasers have demonstrated exciting potential in label-free sensing and cQED research.
IEEE JOURNAL OF QUANTUM ELECTRONICS
(2022)
Article
Chemistry, Physical
Young Jin Lee, Kihwan Moon, Soon-Hong Kwon
Article
Physics, Multidisciplinary
Lukasz Dusanowski, Soon-Hong Kwon, Christian Schneider, Sven Hoefling
PHYSICAL REVIEW LETTERS
(2019)
Article
Optics
Eunso Shin, Seokhyeon Hong, Young Jin Lee, Soon-Hong Kwon
Article
Chemistry, Multidisciplinary
Youngsoo Kim, Kihwan Moon, Young Jin Lee, Seokhyeon Hong, Soon-Hong Kwon
Article
Nanoscience & Nanotechnology
Seokhyeon Hong, Young Jin Lee, Kihwan Moon, Youngsoo Kim, Eunso Shin, Soon-Hong Kwon
JOURNAL OF NANOMATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Youngsoo Kim, Kihwan Moon, Young Jin Lee, Seokhyeon Hong, Soon-Hong Kwon
Article
Chemistry, Analytical
Young Jin Lee, Youngsoo Kim, Seokhyeon Hong, Soon-Hong Kwon
Article
Chemistry, Physical
Heeyeon Park, Kyu-Tae Lee, Soon-Hong Kwon, In Hwan Ahn, Byunghoon Kim, Doo-Hyun Ko, Woong Kim
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Chemistry, Multidisciplinary
Lukasz Dusanowski, Dominik Koeck, Eunso Shin, Soon-Hong Kwon, Christian Schneider, Sven Hoefling
Article
Chemistry, Analytical
Eunso Shin, Young Jin Lee, Hyoungjoo Nam, Soon-Hong Kwon
Article
Multidisciplinary Sciences
Min-Soo Hwang, Hoo-Cheol Lee, Kyoung-Ho Kim, Kwang-Yong Jeong, Soon-Hong Kwon, Kirill Koshelev, Yuri Kivshar, Hong-Gyu Park
Summary: By merging symmetry-protected and accidental bound states in the continuum, an efficient laser with significantly reduced threshold, substantially increased quality factor, and shrunken far-field images can be realized. The study provides a route for nanolasers with reduced out-of-plane losses in finite-size active nanodevices and improved lasing characteristics.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Seung Hyeon Hong, Young Jin Lee, Seokhyeon Hong, Youngsoo Kim, Soon-Hong Kwon
Summary: The article introduces a whispering-gallery-mode double-disk cavity that enhances the quality factor through destructive interference. Under specific structural conditions, the quality factor of the double-disk cavity is 5.67 times higher than that of a single dielectric disk.
Proceedings Paper
Engineering, Electrical & Electronic
Min-Soo Hwang, Hoo-Cheol Lee, Kyoung-Ho Kim, Kwang-Yong Jeong, Soon-Hong Kwon, Kirill Koshelev, Yuri Kivshar, Hong-Gyu Park
Summary: This study demonstrates lasing with ultralow threshold from small-scale dielectric metasurfaces operating in a super-BIC regime. The engineered high-Q resonance comes from the topological merging of accidental and symmetry-protected bound states in the continuum.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Article
Chemistry, Multidisciplinary
Min-Soo Hwang, Jae-Hyuck Choi, Kwang-Yong Jeong, Kyoung-Ho Kim, Ha-Reem Kim, Jae-Pil So, Hoo-Cheol Lee, Jungkil Kim, Soon-Hong Kwon, Hong-Gyu Park
Summary: High quality factor and small mode volume in nanocavities enable efficient nanophotonic devices with low power consumption, strong nonlinearity, and high modulation speed. Single nanocavity designs include semiconductor nanowires, plasmonic cavities, and quasi-bound states in the continuum (quasi-BIC); nanocavity array designs include BIC cavities, parity-time symmetry coupled cavities, and photonic topological cavities, offering various options for laser applications.
CHEMICAL COMMUNICATIONS
(2021)
Proceedings Paper
Optics
L. Dusanowski, S. H. Kwon, C. P. Dietrich, C. Schneider, M. Kamp, S. Hoefling
SMART PHOTONIC AND OPTOELECTRONIC INTEGRATED CIRCUITS XXI
(2019)