Terahertz Imaging for Paper Handling of Legacy Documents

Autor: Min Zhai, Alexandre Locquet, David S. Citrin

Publikováno v: Sensors, Vol 21, Iss 20, p 6756 (2021)

Despite predictions of the paperless office, global demand for printing and writing paper remains strong, and paper appears to be here to stay for some time. Not only firms, but also governments, libraries, and archives are in possession of large col

Externí odkaz: https://doaj.org/article/b3efbfd299e94feaaee93a5dd6d448f8

Microwave Frequency Comb Generation by Gain-Switching Versus Relaxation Oscillations

Autor: David S. Citrin, Anton V. Kovalev, Alexandre Locquet, Evgeny A. Viktorov, Shariful Islam

Publikováno v: IEEE Photonics Technology Letters. 33:491-494

Optoelectronic feedback on a laser diode is demonstrated to generate two distinct modes of periodic pulse-train formation depending on the injection current $J$ of the laser leading to microwave combs in two distinct regimes. For $J$ close to the thr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::354be1d4b2fc6940a969f2e6fe66924a
https://doi.org/10.1109/lpt.2021.3068327

Optical square-wave generation in a semiconductor laser with optoelectronic feedback

Autor: Md. Shariful Islam, Alexandre Locquet, Evgeny A. Viktorov, David S. Citrin, Anton V. Kovalev

Publikováno v: Optics Letters
Optics Letters, Optical Society of America-OSA Publishing, 2021, 46 (24), pp.6031. ⟨10.1364/OL.444055⟩

We report self-sustained optical square-wave (SW) generation in a semiconductor laser diode subjected to delayed optoelectronic feedback on its injection current ( J ). This optoelectronic oscillator relies on nonlinear effects present in both the la

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4704f58bd20bda63d5f74b98ef3fb19c
https://pubmed.ncbi.nlm.nih.gov/34913911

Terahertz Nondestructive Stratigraphic Analysis of Complex Layered Structures: Reconstruction Techniques

Autor: David S. Citrin, Alexandre Locquet, Min Zhai

Publikováno v: Journal of Infrared, Millimeter and Terahertz Waves
Journal of Infrared, Millimeter and Terahertz Waves, Springer Verlag, 2021, ⟨10.1007/s10762-021-00819-1⟩

Terahertz (THz) time-of-flight tomography (TOFT), a nondestructive-evaluation technique for the stratigraphic characterization of structures with layers on the micron-to-millimeter scales, has proven to be challenging to apply to samples containing b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::034f1cc574640b19527d862b35e48c52
https://hal.archives-ouvertes.fr/hal-03419745

Diagnosis of injection-molded weld line in thermoplastic polymer by terahertz reflective imaging and scanning acoustic microscopy

Autor: Alexandre Locquet, M. Fendler, Min Zhai, R. Kalmar, Nico F. Declercq, David S. Citrin, Gerd Schneider, Esam T. Ahmed Mohamed

Publikováno v: 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)
2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1-2, ⟨10.1109/IRMMW-THz50926.2021.9567010⟩

Terahertz (THz) reflective imaging and scanning acoustic microscopy (SAM) were utilized for material characterization as well as quality control of an injection-molded thermoplastic electrical receptacle plate. V-notched weld lines that degrade the m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9327138eed7c6888250e1bed46d48a74
https://hal.archives-ouvertes.fr/hal-03419878