Results 91 to 100 of about 7,836,199 (284)

Gas phase sensors using advanced mid-infrared light sources

Gas sensing and detection have become increasingly important over the last decade. A few examples of applications include indoor CO2 sensors, exhaust gas monitoring and breath tests for medical applications.
Hlavatsch, Michael
core   +1 more source

Spectrally resolved wave-mixing between near- and far-infrared pulses in gas [PDF]

, 2013
We investigate the nonlinear wave-mixing in gases between intense, short optical pulses and long-wavelength fields (mid infrared and terahertz). We show numerically that the beating between the sum- and difference-frequency generation components can be ...
Schmidt, Bruno E., Ozaki, T, Morandotti, R., M Clerici (16177538), Caspani, Lucia, M Shalaby (12138066), Shalaby, M., Vidal, Francois, Ozaki, Tsuneyuki, D Faccio (16177541), B Schmidt (9979535), Clerici, Matteo, Peccianti, M, F Vidal (6971162), Morandotti, Robert, T Ozaki (16177550), Yaakobi, O., Caspani, L, Peccianti, Marco, Schmidt, Bruno E, Shalaby, Mostafa, Marco Peccianti (4464661), Clerici, M, L Caspani (16177544), F Légaré (13690585), Légaré, François, Vidal, F., Morandotti, R, Yaakobi, Oded, O Yaakobi (16177547), Faccio, Daniele, Shalaby, M, Faccio, D, Schmidt, B E, Yaakobi, O, R Morandotti (16168658), Vidal, F, Légaré, F, M Clerici, L Caspani, Ozaki T, Schmidt BE, Morandotti R, R Morandotti, M Shalaby, Faccio D, Yaakobi O, Vidal F, Legare F, D Faccio, M Peccianti, F Légaré, O Yaakobi, Peccianti M, B E Schmidt, Caspani L, T Ozaki, Shalaby M, Clerici M, F Vidal   +59 more
core   +1 more source

Computation‐Less, Bias‐Free, and Ultra‐Broadband Photodetector for On‐Chip Edge Extraction

Advanced Materials, EarlyView.
A computation‐less, bias‐free, and ultra‐broadband photodetector directly converts local optical‐intensity gradients into signed photocurrents through a position‐dependent bi‐directional photoresponse. This intrinsic physical sensing mechanism enables single‐pixel edge extraction from the near‐infrared to the long‐wave infrared at room temperature ...
Jintao Fu, Hao Jiang, Xingsi Liu, Fakun Wang, Yang Peng, Qi Jie Wang, Weibo Gao, Xingzhan Wei, Cheng‐Wei Qiu   +8 more
wiley   +1 more source

Mid-infrared quantum interference and polarization entanglement

, 2020
We demonstrate two-photon interference and polarization entanglement at 2090 nm, constituting a crucial leap towards free-space mid-infrared quantum communication systems in a spectral region with high atmospheric transparency and reduced solar ...
Prabhakar S., Miki S., Yabuno M., Dada A., Taylor G. G., Clerici M., Caspani L., Hadfield R. H., Ebrahim M., Morozov D., Kues M., Terai H., Gawith C., Erotokritou K., Shields T.   +14 more
core  

Watt-scale super-octave mid-infrared intrapulse difference frequency generation

, 2022
Art. 94, 8 S.The development of high-power, broadband sources of coherent mid-infrared radiation is currently the subject of intense research that is driven by a substantial number of existing and continuously emerging applications in medical diagnostics,
Gaida, C., Schülzgen, A., Stutzki, F., Gebhardt, M., Pupeza, I., Heuermann, T., Antonio-Lopez, J., Tünnermann, A., Amezcua-Correa, R., Jauregui, C., Limpert, J.   +10 more
core   +1 more source

Spectrally Coordinated Plasmonic–Photothermal Photocatalysts for Mineralization of Mixed Indoor VOCs Under White LED Illumination

Advanced Materials, EarlyView.
A plasmonic–photothermal–photocatalytic hybrid comprising Cu(II)‐grafted TiO2, yolk–shell Au@SiO2, and reduced graphene oxide sheets (CuT/AuSi‐GS) harvests full‐spectrum white light‐emitting diode (LED) light via complementary photocatalytic oxidation, localized surface‐plasmon‐resonance‐induced electric‐field enhancement, and photothermal acceleration.
Minhyung Lee, Geun Young Kim, Gahye Shin, Haein Cho, Juwon Lee, Jinglin Wen, Wooyul Kim, Changha Lee, Kangwoo Cho, Jae‐Hyuk Kim, Hyoung‐il Kim   +10 more
wiley   +1 more source

Theoretical and numerical investigations of parametric transfer via difference frequency generation for indirect mid-infrared pulse shaping

, 2007
We theoretically and numerically investigate indirect mid-infrared pulse shaping via parametric transfer, specifically difference-frequency generation. We define a quantitative measure for the fidelity of parametric transfer, and investigate the effect ...
Hanna, David C., Jerry Prawiharjo, David C. Hanna, Hung, Hazel S.S., Shepherd, David P., David P. Shepherd, Prawiharjo, Jerry, Hazel S. S. Hung   +7 more
core   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

Experimental investigation of parametric transfer in synchronously pumped optical parametric oscillators

, 2007
We experimentally investigate the parameters affecting parametric transfer in a synchronously pumped optical parametric oscillator for indirect shaping of mid-infrared ultrashort pulses and make comparisons with previously reported numerical modeling ...
Hung, H.S., Shepherd, D.P., Hanna, D.C., Jerry Prawiharjo, Nikita K. Daga, David C. Hanna, Prawiharjo, J., David P. Shepherd, Hazel S. S. Hung, Daga, N.K.   +9 more
core   +1 more source

Infrared confocal imaging for inspection of flaws in yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) [PDF]

, 2011
Custom made medical yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) components require a high standard of machining and inspection techniques to ensure high reliability of the manufactured parts. Due to heat generated during machining processes,
Weston, Nick, Parry, Jonathan P., Duncan P Hand, Jonas, Kevyn, Jonathan D Shephard, Frank Albri, J Graham Crowder, Shephard, Jonathan D.; id_orcid, Kevyn Jonas, Nick Weston, Crowder, J. Graham, Mateusz Matysiak, Albri, Frank, Jones, Nick, Hand, Duncan P.; id_orcid, Nick Jones, Matysiak, Mateusz, Jonathan P Parry   +17 more
core   +1 more source