Article
Materials Science, Multidisciplinary
Arnaud Lemiere, Remi Bizot, Frederic Desevedavy, Gregory Gadret, Jean-Charles Jules, Pierre Mathey, Christophe Aquilina, Pierre Bejot, Franck Billard, Olivier Faucher, Bertrand Kibler, Frederic Smektala
Summary: The study demonstrates mid-infrared coherent supercontinuum generation in the range of 1.7-18 μm using a unique dispersion-engineered step-index Ge-Se-Te fiber, thus opening up the entire molecular fingerprint region for future chalcogenide fiber platforms.
RESULTS IN PHYSICS
(2021)
Article
Optics
Rasmus Eilkoer Hansen, Callum Robertson Smith, Asbjorn Moltke, Christian Rosenberg Petersen, Sidharthan Raghuraman, Seongwoo Yoo, Ole Bang
Summary: Mid-infrared supercontinuum lasers are crucial in various applications, but their noise level often limits their performance. This paper presents a simple technique to reduce the noise of high noise soliton-based supercontinuum sources. By adding a short piece of normal dispersion fiber, the spectrally distributed solitons are forced to broaden and overlap, effectively averaging out the noise. Experimental and numerical results demonstrate the effectiveness of this noise reduction method using a ZBLAN fiber based mid-IR SC source and highly nonlinear arsenic-sulfide fiber. The method is also applicable to other soliton-based near-IR or mid-IR SC sources and is compared to spectral alignment noise reduction mechanisms.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
B. Kibler, E. Serrano, A. Maldonado, L. -r. Robichaud, S. Duval, M. Bernier, R. Bizot, F. Desevedavy, R. Vallee, Y. Messaddeq, F. Smektala
Summary: In this study, we explore numerically and experimentally the coherent mid-infrared supercontinuum generation in an all-fiber configuration using femtosecond pumping. We demonstrate the advantageous combination of dispersion-engineered chalcogenide fibers with a turn-key amplified femtosecond fiber laser, resulting in compact and coherent octave-spanning fiber supercontinuum sources centered on the 2-5 μm infrared atmospheric window with a maximum average power of 50 mW at 25 MHz repetition rate.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Jun Wang, Guolin Wu, Zan Feng, Jinjing Wang, Yuze Wang, Kai Jiao, Xiange Wang, Shengchuang Bai, Peiqing Zhang, Zheming Zhao, Rongping Wang, Xunsi Wang, Qiuhua Nie
Summary: This paper discusses the purification methods for removing impurities like Se-H in chalcogenide glasses, and explores the applications of Se-H-free chalcogenide glass fiber in the mid-infrared.
Article
Physics, Multidisciplinary
Kun Xiao, Yudong Ye, Rui Min
Summary: In this study, broadband and coherent supercontinuum spectra were generated in the mid-infrared region using dispersion-engineered all-chalcogenide microstructured fibers (MOFs). The fibers exhibited a broad and flat all-normal-dispersion characteristic, making them suitable for various applications.
FRONTIERS IN PHYSICS
(2022)
Review
Engineering, Electrical & Electronic
Than Singh Saini, Ravindra Kumar Sinha
Summary: The mid-infrared region is important for the fundamental vibrations of many molecules, making it known as the "molecular fingerprint region." Tellurite and chalcogenide glasses are advantageous for mid-infrared super continuum generation due to their wide transparency window and high optical nonlinearities. Photonic crystal fibers with diverse geometries and materials enable supercontinuum generation in an broad spectral range.
PROGRESS IN QUANTUM ELECTRONICS
(2021)
Article
Optics
Dong Wu, Than S. Saini, Shiyu Sun, Meng Huang, Qiang Fu, Thomas W. Hawkins, John Ballato, Anna C. Peacock
Summary: The efficient conversion from the telecom band to the mid-infrared spectral region can be achieved by designing a tapered silicon core optical fiber. By pumping with a fiber laser, a wide tuning range and high conversion efficiency can be obtained.
Article
Optics
Jacek Swiderski, Pawel Grzes
Summary: High-power supercontinuum generation was demonstrated in step-index fluoroindate (InF3) and chalcogenide (As2S3) fibers, with output average power of 2.95 W in InF3 fiber and 440 mW in As2S3 fiber extending up to 4.17 μm. By cascading the system, the spectrum was extended up to 5.58 μm. The flat spectrum and high-output power indicate the potential of these sources for various applications.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
B. Kibler, A. Lemiere, J. -T. Gomes, D. Gaponov, L. Lavoute, F. Desevedavy, F. Smektala
Summary: The experimental demonstration shows that supercontinuum generation with a bandwidth of 140 THz is achievable in a 10 cm-long all-normal dispersion step-index tellurite fiber pumped by a turn-key femtosecond fiber laser. By controlling soliton self-frequency shift and quasi-linear chirp, pulse duration can be compressed from 85 fs to 12 fs during nonlinear propagation.
OPTICS COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Zhijian Wu, Yang Ding, Xuefeng Peng
Summary: In this study, we fabricated a core-cladding Ge-Sb-Se glass fiber and achieved a supercontinuum spectrum from 2 μm to 9 μm. By comparing the simulated and experimental supercontinua, we investigated the effect of using different Raman response functions calculated with a single Lorentzian model and a multiple vibrational mode model on the evolution of the supercontinuum. Our results show that the Raman response function generated by the multiple vibrational mode model accurately captures the material's actual response behavior, leading to a more accurate supercontinuum generation. This advancement has significant implications for optimizing the performance of mid-infrared supercontinuum sources.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Xiaohui Guo, Fanchao Meng, Zhixu Jia, Yadong Jiao, Yasutake Ohishi, Weiping Qin, Guanshi Qin
Summary: This study demonstrates the generation of dispersive waves at 4 pm using dispersion-engineered fluorotellurite fibers pumped by a femtosecond fiber laser. The fluorotellurite fibers have two zero-dispersion wavelengths and the dispersive wave is generated through a series of processes. The results indicate the potential of dispersion-engineered fluorotellurite fibers for constructing all-fiber 4 pm light sources.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Instruments & Instrumentation
Zan Feng, Jun Wang, Guolin Wu, Jinjing Wang, Xiaolin Liang, Tiesong Xu, Minghui Zhong, Jing Xiao, Jingfei Shen, Zheming Zhao, Xunsi Wang, Peiqing Zhang, Yongxing Liu, Shixun Dai, Rongping Wang
Summary: A low-loss and arsenic-free sulfur-based chalcogenide fiber has been fabricated using a novel process, demonstrating optical loss of <2 dB/m and a mid-infrared supercontinuum spectrum generation. The fiber also shows a high transmission efficiency of 53% at 4 µm, making it significant for applications such as IR night vision and bio-photonics.
INFRARED PHYSICS & TECHNOLOGY
(2021)
Article
Optics
Pan Wang, Jiapeng Huang, Shangran Xie, Johann Troles, Philip St J. Russell
Summary: This paper reports the generation of broadband mid-infrared supercontinuum lasers using As2S3-silica nanospike hybrid waveguides, as well as the fabrication and investigation of linearly tapered millimeter-scale waveguides for the first time. These waveguides exhibit broader spectra, improved spectral coherence, long-term stability, and water resistance, offering an alternative route for generating broadband mid-IR supercontinua with applications in frequency metrology and molecular spectroscopy, especially in humid and aqueous environments.
PHOTONICS RESEARCH
(2021)
Review
Optics
Yingying Wang, Shixun Dai
Summary: Chalcogenide (ChG) glasses have wide transparency window and high optical nonlinearity, making them excellent candidates for mid-infrared (MIR) supercontinuum (SC) generation. Significant progress has been made in MIR SC generation based on ChG fibers, particularly in spectral extension and output power improvement.
Article
Engineering, Electrical & Electronic
Ma Ziyang, Li Li, Ni Xiaowu
Summary: This paper theoretically investigates the supercontinuum generation using a novel photonic-crystal pillar waveguide (PCPW) spanning from near-infrared (NIR) to mid-infrared. By optimizing the PCPW design and dispersion properties, the study achieves ultra-broadband spectral broadening from 1 to 10 micrometers under relatively lower peak power pump pulses. The proposed PCPW offers an efficient waveguide structure for generating ultra-broadband supercontinuum with shorter wavelength laser sources.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Environmental Sciences
Xueying Yu, Dylan B. Millet, Kelley C. Wells, Timothy J. Griffis, Xin Chen, John M. Baker, Stephen A. Conley, Mackenzie L. Smith, Alexander Gvakharia, Eric A. Kort, Genevieve Plant, Jeffrey D. Wood
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2020)
Article
Physics, Applied
Ramon A. Martinez, Kaiwen Guo, Fred L. Terry, Tianqu Zhai, Mohammed N. Islam, Agustin I. Ifarraguerri
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Optics
Robert Rockmore, Ricky Gibson, Jerome V. Moloney, R. Jason Jones
Article
Optics
Ricky Gibson, Ivan Avrutsky, Shivashankar Vangala, Dennis E. Walker, Joshua R. Hendrickson
Summary: A second-order transfer function analysis was performed on plasmonic modes with different quality factors to study the coupling of modes in metal-insulator-metal structures. The asymmetric Fano-like lineshape at resonant crossings was observed in both simulations and angle dependent spectra. By using the pole analysis method, the coupling coefficient for this system was extracted and can be applied to other plasmonic and photonic coupled resonances.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Optics
Jacob Hoehler, Ricky Gibson, Jennifer M. Reed, Robert Bedford
Summary: The developed single transverse mode high-pulse-energy VECSEL emits at a wavelength of 2.04 mu m with a peak power exceeding 500 W. The laser has potential applications in incoherent LIDAR, materials processing, gas sensing, and nonlinear optics.
Article
Physics, Applied
Alex Y. Song, Akhil Raj Kumar Kalapala, Ricky Gibson, Kevin James Reilly, Thomas Rotter, Sadhvikas Addamane, Haiwen Wang, Cheng Guo, Ganesh Balakrishnan, Robert Bedford, Weidong Zhou, Shanhui Fan
Summary: By using a perturbed photonic Dirac-cone, an ultra-narrow and finite Q-factor peak can be realized in the wavevector space, with tunable peak value and width. A lower bound in the minimal viable width is discussed given a peak Q-value while maintaining sufficient Q differentiation among modes. The strong angular and frequency Q-selection is applicable in optical devices requiring strong angle- and frequency-selections.
APPLIED PHYSICS LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Andres Gonzalez, Dylan B. Millet, Xueying Yu, Kelley C. Wells, Timothy J. Griffis, Bianca C. Baier, Patrick C. Campbell, Yonghoon Choi, Joshua P. DiGangi, Alexander Gvakharia, Hannah S. Halliday, Eric A. Kort, Kathryn McKain, John B. Nowak, Genevieve Plant
Summary: This study used extensive airborne measurements and an atmospheric model to investigate fossil and nonfossil CO sources in the US, finding a low bias in the simulated CO background. Fossil sources account for a small proportion of CO in the air during summer, while nonfossil and biogenic sources play a larger role. In other seasons, fossil sources drive significant variability downwind of urban areas.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Cynthia Gerlein-Safdi, A. Anthony Bloom, Genevieve Plant, Eric A. Kort, Christopher S. Ruf
Summary: Wetlands are the largest source of methane to the atmosphere, with emissions expected to respond to changing climate. By utilizing CYGNSS satellite data and computer vision algorithms, more accurate inundation maps can be generated for wetlands, allowing for analysis of the dynamic changes in methane emissions from wetlands.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Article
Environmental Sciences
Genevieve Plant, Eric A. Kort, Lee T. Murray, Joannes D. Maasakkers, Ilse Aben
Summary: This study introduces a satellite-based method to estimate urban methane emissions using simultaneous observations of methane and carbon monoxide, without relying on atmospheric transport models. Initial assessments in eight U.S. cities indicated that emission inventory underestimates, revealing a broader pathway to study urban methane emissions on a global scale.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Genevieve Plant, Eric A. Kort, Adam R. Brandt, Yuanlei Chen, Graham Fordice, Alan M. Gorchov Negron, Stefan Schwietzke, Mackenzie Smith, Daniel Zavala-Araiza
Summary: Flares do not efficiently destroy methane as assumed, and both unlit flares and inefficient combustion contribute significantly to its ineffective destruction.
Article
Environmental Sciences
Xueying Yu, Dylan B. Millet, Kelley C. Wells, Daven K. Henze, Hansen Cao, Timothy J. Griffis, Eric A. Kort, Genevieve Plant, Malte J. Deventer, Randall K. Kolka, D. Tyler Roman, Kenneth J. Davis, Ankur R. Desai, Bianca C. Baier, Kathryn McKain, Alan C. Czarnetzki, A. Anthony Bloom
Summary: The study found that wetlands in the US are the largest regional source of methane, and livestock are the largest anthropogenic source; optimized models improve agreement with independent datasets and reveal seasonal and spatial errors; the results support estimates of livestock emissions but suggest errors for manure emissions, which could be reduced through improved management.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Robert Rockmore, Ricky Gibson, R. Jason Jones, Jerome Moloney
VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASERS (VECSELS) X
(2020)
Proceedings Paper
Optics
Ramon A. Martinez, Kaiwen Guo, Fred L. Terry, Tianqu Zhai, Mohammed N. Islam, Agustin I. Ifarraguerri
OPTICAL BIOPSY XVIII: TOWARD REAL-TIME SPECTROSCOPIC IMAGING AND DIAGNOSIS
(2020)
Proceedings Paper
Optics
Kaiwen Guo, Tianqu Zhai, Brandon Demory, Shawn Z. Meah, Ramon A. Martinez, Mohammed N. Islam, Fred L. Terry, Robert Maynard
OPTICAL BIOPSY XVIII: TOWARD REAL-TIME SPECTROSCOPIC IMAGING AND DIAGNOSIS
(2020)
