Room-temperature midinfrared two-photon photodetector

2008 ◽  
Vol 93 (10) ◽  
pp. 101114 ◽  
Author(s):  
H. Schneider ◽  
H. C. Liu ◽  
S. Winnerl ◽  
O. Drachenko ◽  
M. Helm ◽  
...  
Keyword(s):  
Room Temperature ◽  
Two Photon

scholarly journals Near-Infrared-Excitable Organic Ultralong Phosphorescence through Multiphoton Absorption

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Ye Tao ◽  
Lele Tang ◽  
Qi Wei ◽  
Jibiao Jin ◽  
Wenbo Hu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Near Infrared ◽  
Emission Feature ◽  
Multiphoton Absorption ◽  
Triplet Excited State ◽  
Room Temperature Phosphorescence ◽  
Two Photon ◽  
Nir Light ◽  
Phosphorescence Quantum Yield ◽  
Novel Applications

Organic ultralong room-temperature phosphorescence (OURTP) with a long-lived triplet excited state up to several seconds has triggered widespread research interests, but most OURTP materials are excited by only ultraviolet (UV) or blue light owing to their unique stabilized triplet- and solid-state emission feature. Here, we demonstrate that near-infrared- (NIR-) excitable OURTP molecules can be rationally designed by implanting intra/intermolecular charge transfer (CT) characteristics into H-aggregation to stimulate the efficient nonlinear multiphoton absorption (MPA). The resultant upconverted MPA-OURTP show ultralong lifetimes over 0.42 s and a phosphorescence quantum yield of ~37% under both UV and NIR light irradiation. Empowered by the extraordinary MPA-OURTP, novel applications including two-photon bioimaging, visual laser power detection and excitation, and lifetime multiplexing encryption devices were successfully realized. These discoveries illustrate not only a delicate design map for the construction of NIR-excitable OURTP materials but also insightful guidance for exploring OURTP-based nonlinear optoelectronic properties and applications.

Semiconductor sources of two-photon states at room temperature in the telecom range

2012 ◽  
Author(s):  
A. Orieux ◽  
M. Savanier ◽  
C. E. Rodrigues de Souza ◽  
A. Andronico ◽  
A. Lemaître ◽  
...  
Keyword(s):  
Room Temperature ◽  
Two Photon ◽  
Photon States

Teleportation of a controlled-NOT gate for photon and electron-spin qubits assisted by the nitrogen-vacancy center

2015 ◽  
Vol 15 (15&16) ◽  
pp. 1397-1419
Author(s):  
Ming-Xing Luo ◽  
Hui-Ran Li
Keyword(s):  
Electron Spin ◽  
Spin System ◽  
Room Temperature ◽  
Coherence Time ◽  
Nitrogen Vacancy ◽  
Cnot Gate ◽  
Long Distance ◽  
Two Photon ◽  
Nitrogen Vacancy Center ◽  
Vacancy Center

Teleportations of quantum gates are very important in the construction of quantum network and teleportation-based model of quantum computation. Assisted with nitrogenvacancy centers, we propose several schemes to teleport the quantum CNOT gate. Deterministic CNOT gate may be implemented on a remote two-photon system, remote two electron-spin system, hybrid photon-spin system or hybrid spin-photon system. Each photon only interacts with one spin each time. Moreover, quantum channel may be constructed by all combinations of the photon or electron-spin entanglement, or their hybrid entanglement. Since these electron-spin systems have experimentally shown a long coherence time even at the room temperature, our schemes provide useful ways for long-distance quantum applications.

High quality two-photon pumped whispering-gallery-mode lasing from ultrathin CdS microflakes

2019 ◽  
Vol 7 (41) ◽  
pp. 12869-12875 ◽  
Author(s):  
Liyun Zhao ◽  
Qiuyu Shang ◽  
Yan Gao ◽  
Bao Jin ◽  
Tianyou Zhai ◽  
...  
Keyword(s):  
Cadmium Sulfide ◽  
Room Temperature ◽  
Whispering Gallery Mode ◽  
High Quality ◽  
Green Color ◽  
Whispering Gallery ◽  
Two Photon

Room temperature two-photon pumped green-color whispering-gallery-mode lasing from cadmium sulfide microflakes with dimensions below 60 nm.

scholarly journals Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting

2019 ◽  
Vol 10 (31) ◽  
pp. 7352-7357 ◽  
Author(s):  
Zhu Mao ◽  
Zhan Yang ◽  
Chao Xu ◽  
Zongliang Xie ◽  
Long Jiang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Energy Gap ◽  
Infrared Laser ◽  
Concentration Quenching ◽  
Ambient Conditions ◽  
Room Temperature Phosphorescence ◽  
Small Energy ◽  
Two Photon ◽  
Dual Channel ◽  
Triplet Harvesting

Small energy gap boosts dual-channel triplet harvesting via TADF and UOP, which suppresses long-lived triplet concentration quenching. An infrared laser (808 nm) is able to induce persistent emission under ambient conditions.

Transient Energy Transfer in ps Two-Photon Absorption Experiments in CdTe at Room Temperature

1990 ◽  
Vol 158 (2) ◽  
pp. 769-780 ◽  
Author(s):  
I. Rückmann ◽  
J. Kornack ◽  
J. Kolenda ◽  
M. Petrauskas
Keyword(s):  
Energy Transfer ◽  
Room Temperature ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Transient Energy

Laser Induced Decomposition of Triethylgallium and Trimethylgallium Adsorbed on GaAs(100)

1988 ◽  
Vol 129 ◽  
Author(s):  
J. A. Mccaulley ◽  
V. R. Mccrary ◽  
V. M. Donnelly
Keyword(s):  
Excimer Laser ◽  
Photoelectron Spectroscopy ◽  
Room Temperature ◽  
Electronic Excitation ◽  
Removal Rate ◽  
Laser Wavelength ◽  
High Fluence ◽  
X Ray ◽  
Two Photon ◽  
Induced Decomposition

ABSTRACTWe report X-ray photoelectron spectroscopy (XPS) studies of excimer laser stimulated decomposition of triethylgallium (TEGa) and trimethylgallium (TMGa) adsorbed on Gastabilized GaAs(100) surfaces in ultrahigh vacuum. TEGa and TMGa dissociatively chemisorb on GaAs at room temperature, whereupon irradiation by an excimer laser (at 193 or 351 nm) leads to further dissociation and desorption of carbon-containing species. The carbon removal rate (per laser pulse) decreases as carbon is removed suggesting multiple reaction sites, coverage dependent Arrhenius parameters, or second-order reactions. Based on the dependence of the rate on laser wavelength and fluence, we conclude that at low fluence, a two-photon electronic excitation of the adsorbate occurs, while at high fluence, laser induced pyrolysis dominates.

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