Zobrazeno 1 - 10
of 23
pro vyhledávání: '"P. L. Reno"'
Autor:
Anthony D. Kim, Christopher A. Curwen, Yu Wu, John L. Reno, Sadhvikas J. Addamane, Benjamin S. Williams
Publikováno v:
IEEE Journal of Microwaves, Vol 3, Iss 1, Pp 305-318 (2023)
Terahertz (THz) external-cavity lasers based on quantum-cascade (QC) metasurfaces are emerging as widely-tunable, single-mode sources with the potential to cover the 1--6 THz range in discrete bands with milliwatt-level output power. By operating on
Externí odkaz:
https://doaj.org/article/0e9ccd07941248a48d3bdc268b75e971
Publikováno v:
JBMR Plus, Vol 7, Iss 6, Pp n/a-n/a (2023)
ABSTRACT Cartilage histomorphometry is often performed on decalcified, paraffin‐embedded bone sections, which provide versatility in staining applications from basic morphology to immunohistochemistry. Safranin O is a cationic dye that binds to pro
Externí odkaz:
https://doaj.org/article/6915de7305dd424ebfd86d98c08e1bb3
Autor:
Christopher A. Curwen, Mohammad Shahili, Sadhvikas J. Addamane, John L. Reno, Boris S. Karasik, Benjamin S. Williams, Jonathan H. Kawamura
Publikováno v:
AIP Advances, Vol 12, Iss 11, Pp 115205-115205-6 (2022)
An active amplifying metasurface based on a quantum-cascade gain material at 2.7 THz is studied. The metasurface is first evaluated as the active component of an external cavity laser with excellent beam quality and frequency tunability from 2.55–2
Externí odkaz:
https://doaj.org/article/0e3727dd47e24945a585ace34d31aaa8
Autor:
Christopher A. Curwen, Sadhvikas J. Addamane, John L. Reno, Mohammad Shahili, Jonathan H. Kawamura, Ryan M. Briggs, Boris S. Karasik, Benjamin S. Williams
Publikováno v:
AIP Advances, Vol 11, Iss 12, Pp 125018-125018-5 (2021)
We compare the performance of 10 and 5 μm thick metal–metal waveguide terahertz quantum-cascade laser ridges operating around 2.7 THz and based on a 4-well phonon depopulation active region design. Thanks to reduced heat dissipation and lower ther
Externí odkaz:
https://doaj.org/article/d624f95042e948fca284e8d266c316f5
Autor:
Kelsey M. Kjosness, Philip L. Reno
Publikováno v:
EvoDevo, Vol 10, Iss 1, Pp 1-16 (2019)
Abstract Background The pisiform and calcaneus are paralogous bones of the wrist and ankle and are the only carpal and tarsal, respectively, to develop from two ossification centers with an associated growth plate in mammals. Human pisiforms and calc
Externí odkaz:
https://doaj.org/article/6e518a1547124a4c8db5996b4b133d92
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 21, Iss 11, Pp n/a-n/a (2020)
Abstract One of the requirements for inferring mantle redox states via zircon Ce/Ce* oxybarometry and Ti‐in‐zircon thermometry is to select mantle‐equilibrated zircon derived from melts that have not interacted with the hydrosphere nor assimila
Externí odkaz:
https://doaj.org/article/7fb226a744cf4d4a85d5ae918346585e
Autor:
Oleg Mitrofanov, Lucy L. Hale, Polina P. Vabishchevich, Ting Shan Luk, Sadhvikas J. Addamane, John L. Reno, Igal Brener
Publikováno v:
APL Photonics, Vol 5, Iss 10, Pp 101304-101304-7 (2020)
Perfect absorption of light by an optically thin metasurface is among several remarkable optical functionalities enabled by nanophotonics. This functionality can be introduced into optoelectronic devices by structuring an active semiconductor-based e
Externí odkaz:
https://doaj.org/article/c5f875fcd85c4cfaaa34b0a3168505a4
Autor:
Sheng Liu, Polina P. Vabishchevich, Aleksandr Vaskin, John L. Reno, Gordon A. Keeler, Michael B. Sinclair, Isabelle Staude, Igal Brener
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Frequency mixers are hard to achieve at optical frequencies because it is difficult to meet different phase-matching conditions. Here, the authors show that GaAs metasurfaces can mix laser beams to generate eleven new wavelengths through different no
Externí odkaz:
https://doaj.org/article/3c7e005fe72f43fdbdb1e8bdc78e78f1
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Proper design of the gratings can enhance the efficiency of distributed-feedback and quantum cascade lasers. Here, Jin et al. use a hybrid grating system that superposes second- and fourth-order Bragg gratings and achieve high radiative efficiency an
Externí odkaz:
https://doaj.org/article/86f750903414488e8f434f50cd50097e
Publikováno v:
APL Photonics, Vol 3, Iss 5, Pp 051703-051703-6 (2018)
We designed an optically thin photoconductive channel as an all-dielectric metasurface comprising an array of low-temperature grown GaAs nanobeams and a sub-surface distributed Bragg reflector. The metasurface exhibited enhanced optical absorption,
Externí odkaz:
https://doaj.org/article/be9c4fcb4f874108b562369215a1d84f