Article
Optics
Mulong Liu, Chengwei Gu, Xuening Fan, Zhiheng Li, Huimin Huang, Zhizhou Lu, Wei Zhao
Summary: The study introduces a dispersion-flattened technology for producing broadband and low anomalous dispersion while minimizing zero-dispersion wavelengths. This structure can be formed by nanophotonic waveguides using different material combinations, achieving flat dispersion ranging from 0 to 27 ps/nm/km across a wide range of wavelengths.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Kangzhu Zhou, Qian Li, Zhe Kang, Jiayao Huang, P. K. A. Wai
Summary: A novel on-chip cascaded structure utilizing a microresonator and a slot waveguide for dual pump supercontinuum generation is proposed. By employing a low-power single continuous wave pump, dissipative Kerr soliton is successfully generated and serves as a dual pump seed for supercontinuum generation in the following slot waveguide. Numerical simulations have demonstrated the generation of 1.56 octave-spanning supercontinuum within the wavelength range of 1 to 3 μm.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Physical
S. Szoke, M. He, B. P. Hickam, S. K. Cushing
Summary: Entangled photon spectroscopy, a nascent field, has implications for measurement and imaging in chemical, biology, and materials fields. It offers improved spatial and temporal-resolution, increased cross sections for multiphoton and nonlinear measurements, and abilities in inducing or measuring quantum correlations. High-flux entangled sources are essential for this technique, and the research reports on a platform that generates entangled photon pairs efficiently.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Vasilii Voropaev, Shangran Xie, Aleksandr Donodin, Daniil Batov, Mikhail Tarabrin, Johann Troles, Vladimir Lazarev
Summary: Researchers have successfully generated octave-spanning supercontinuum in As2S3-silica hybrid nanospike waveguides using a thulium-doped all-fiber femtosecond laser and amplifier system at a wavelength of 1.9 μm. The widest supercontinuum was obtained in the wavelength range of 1.1-2.5 μm, and it exhibited coherent characteristics throughout the entire spectral range, making it suitable for creating a self-referenced laser comb.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Ming-Hsiung Wu, Yan-Jou Lin, Fredrik Laurell, Yen-Chieh Huang
Summary: The researchers successfully generated a visible and near-infrared super-continuum in a monolithic KTP crystal using a high-gain, ultra-broadband Raman oscillator. By maximizing Raman gain and aligning Stokes polarization perpendicular to the plane of reflections, the oscillator produced quasi-mode-locked Stokes pulses across the visible and near-infrared spectra.
Article
Optics
Irina Zhluktova, Andrei D. Zverev, Serafima A. Filatova, Vladimir A. Kamynin, Alexej A. Sysoliatin, Vladimir B. Tsvetkov
Summary: Octave-spanning supercontinuum conversion has been investigated in three different rare-earth doped fiber amplifiers. The erbium amplifier achieved an output power of 445 mW with a spectral width of 1250 nm. The thulium amplifier obtained an average output power of 390 mW and a spectral width of 569 nm. Additionally, the holmium amplifier produced an average output power of 724 mW with a spectral width of 450 nm. In all cases, the output pulse envelope did not exceed 0.72 ns.
Article
Optics
Xincai Diao, Runzhi Chen, Guoqing Chang
Summary: SESS technology can generate wavelength-tunable femtosecond pulses with a wide tuning range and high energy conversion efficiency. By optimizing dispersion parameters, a larger tuning range and higher conversion efficiency can be achieved.
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
Instruments & Instrumentation
Qimeng Lin, Tingting Gang, Chun Zhang, Baole Lu, Lei Hou, Jintao Bai
Summary: We demonstrate the generation of switchable dual-state solitons in a compact ultrashort pulse Er-doped fibre laser through experiments. An octave-spanning supercontinuum is obtained using an Er-doped fibre amplifier seeded by the self-similar soliton. By adjusting the pump power and polarization state, the generation of dual-state solitons can be switched. The amplifier compresses the pulse duration and produces a 147.2 fs ultrashort pulse with a spectral bandwidth of over 650 nm. The maximum output power of the laser system is 195 mW. Our experimental results open up the possibility of achieving supercontinuum generation based on switchable dual-state solitons in a standard single-mode fibre-format energetic ultrashort laser system.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Minje Song, Hyunjong Choi, Gyudong Choi, Sang-Pil Han, Seungyoung Lim, Taehyun Lee, Minhyup Song
Summary: We present ultra-broadband flat-topped supercontinuum laser sources with programmable repetition rate, spectral bandwidth, and wavelength regime. This work opens new possibilities for generating robust and coherent multiple optical carriers with further C-bands in optical networks.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Lanh Chu Van, Thuy Nguyen Thi, Bao Tran Le Tran, Duc Hoang Trong, Ngoc Vo Thi Minh, Hieu Van Le, Van Thuy Hoang
Summary: Numerical calculations of multi-octave spanning supercontinuum generation were carried out in two proposed As2Se3 photonic crystal fibers, taking into account the effects of vacuum noise and pulse-to-pulse relative intensity noise. The results showed high coherence in the SCG due to vacuum noise, but significant coherence reduction was observed due to pulse-to-pulse relative intensity noise, which depends on pulse duration and physical mechanisms of spectral broadening.
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
S. Vasilyev, I Moskalev, V Smolski, J. Peppers, M. Mirov, Y. Barnakov, V Fedorov, D. Martyshkin, S. Mirov, V Gapontsev
Summary: This study presents the first femtosecond polycrystalline Cr:ZnS oscillator with an octave-spanning spectrum, achieving an average power of 1.4 W at a central wavelength of 2.4 mu m and a pulse repetition frequency of 79 MHz.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Article
Optics
Thuy Nguyen Thi, Duc Hoang Trong, Bao Tran Le Tran, Lanh Chu Van
Summary: This work introduces the generation of flat-top and broadband supercontinuum (SC) in photonic crystal fibers (PCFs) infiltrated with carbon tetrachloride (CCl4) with different air hole diameters in the cladding. The optical properties of the fundamental mode are analyzed through numerical simulation. Based on the results, two optimized PCFs with small dispersion are proposed and verified for SC generation. The first fiber has all-normal dispersion, generating a broadband of 768nm and flat-top with low input energy and short time duration. The second fiber has anomalous dispersion, producing a SC spectrum of 1,751.1nm with specific input energy and time duration.
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS
(2023)
Article
Optics
Yiquan Wen, Hongzhi Jia
Summary: We designed an all-normal flat near-zero dispersion As2S3 photonic crystal fiber (PCF) with orderly arranged air hole rings to generate an orbital angular momentum (OAM) supercontinuum (SC). By carefully engineering the PCF, we optimized the chromatic dispersion and confinement loss characteristics compared to previous studies. Simulation results show that launching a specific pulse into the designed PCF can form a highly coherent OAM(1,1) SC with a wide bandwidth.
OPTICAL ENGINEERING
(2023)
Article
Optics
Xiao Zou, Wenkai Li, Shizhen Qu, Kun Liu, Hao Li, Qi Jie Wang, Ying Zhang, Houkun Liang
Summary: The advancement of mid-infrared parametric amplification technique has driven strong-field experiments in science, but low conversion efficiency in MIR wavelength hinders further exploration. An efficient method to double the efficiency of MIR OPCPA system is demonstrated with a flat-top pump profile, showing promise for high energy high power MIR lasers in emerging strong field experiments. This technique could potentially enhance parametric efficiency in other nonlinear conversions and wavelength ranges.
LASER & PHOTONICS REVIEWS
(2021)
Article
Optics
Saba N. Khan, Sudip K. Chatterjee, Partha Roy Chaudhuri
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2016)
Article
Physics, Applied
Partha Sona Maji, Partha Roy Chaudhuri
JOURNAL OF APPLIED PHYSICS
(2016)
Article
Optics
Saba N. Khan, Partha Roy Chaudhuri
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2017)
Article
Engineering, Electrical & Electronic
Sudip K. Chatterjee, Saba N. Khan, Partha Roy Chaudhuri
OPTICAL AND QUANTUM ELECTRONICS
(2016)
Article
Optics
Partha Sona Maji, Partha Roy Chaudhuri
Article
Optics
Partha Sona Maji, Partha Roy Chaudhuri
Article
Engineering, Electrical & Electronic
Kajal Mondal, Partha Roy Chaudhuri
IEEE PHOTONICS TECHNOLOGY LETTERS
(2018)
Article
Optics
Partha Roy Chaudhuri, Somarpita Pradhan
Article
Optics
Partha Roy Chaudhuri, Somarpita Pradhan
Article
Optics
Sudip K. Chatterjee, R. Vijaya
OPTICS COMMUNICATIONS
(2020)
Article
Optics
Sudip K. Chatterjee, Saba N. Khan
Summary: Parametric sources can be generated by continuously pumping a specially designed gelatin-coated chalcogenide-silica dynamic fiber, producing spectrally isolated narrowband tunable sources at far-detuned wavelengths. These sources have potential applications in short-wave infrared spectroscopy and biomedical fields.
Article
Engineering, Electrical & Electronic
Isha Sharma, Partha Roy Chaudhuri
Summary: The experimental demonstration of an all-optical electric field sensing system using single-mode optical fiber has been successfully conducted. By optimizing the composition of sensing material and conducting various experiments, a novel beam-deflection method for electric field sensing has been proposed. The system shows promising results and has potential applications in hazardous and electrically prone environments.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Optics
Jeeban Kumar Nayak, Partha Roy Chaudhuri, Pankaj K. Sahoo
Summary: This paper presents a stable hybrid plasmonic optical directional coupler based on an embedded silver nanostructure that can offer up to 95% power transfer with low propagation loss and good field confinement. The shortest coupling length for maximum power coupling is found to be 2.488 μm through detailed study of transmission characteristics.
Article
Optics
Partha Roy Chaudhuri, Isha Sharma
Summary: We experimentally demonstrated a new method to determine the polarization properties of piezoelectric nanocomposite materials using the fiber-optic cantilever beam deflection principle. By optimizing the composition of nanoparticles, varying parameters systematically, and embedding the fiber beam deflection transducer in a fiber-to-fiber signal transmission configuration, we were able to determine the polarization values and enhance sensitivity for this new approach.
JOURNAL OF OPTICS-INDIA
(2021)
Article
Optics
Kajal Mondal, Partha Roy Chaudhuri
JOURNAL OF OPTICS-INDIA
(2016)
