Results 111 to 120 of about 17,587,514 (208)

Tunable Terahertz Generation in Dispersion‐Engineered ZnTe Waveguides

Laser &Photonics Reviews, EarlyView.
A dispersion‐engineered Zinc Telluride (ZnTe) slab waveguide platform enables tunable and efficient guided‐wave terahertz (THz) generation through modal phase matching. By tailoring the optical and THz modal dispersion, coherent THz emission is achieved across 0.1–3 THz.
Arun Jana, Cormac McDonnell, Mai Tal, Anastasiya Reveguk, Amit Kohn, Tal Ellenbogen   +5 more
wiley   +1 more source

Parallel Multi‐Target Detection for Quantum LiDAR

Laser &Photonics Reviews, EarlyView.
Parallel multi‐target detection is achieved in quantum LiDAR with a single‐pixel quantum readout. Direction and distance information are extracted together, allowing multiple objects to be distinguished under noisy low‐light conditions and pointing to a new strategy for scan‐free quantum remote sensing.
Junyeop Kim, Dongjin Lee, Woncheol Shin, Yeoulheon Seong, Heedeuk Shin   +4 more
wiley   +1 more source

Parallel Vector Processing in Optical Computing With Jacobi Time‐Wave Packets

Laser &Photonics Reviews, EarlyView.
Functionality of a single neuron and state of the art photonic acceleration with a Mach‐Zehnder‐interferometer (MZI) mesh (i), a crossbar array (ii) and a micro ring resonator (MRR) array (iii). In the proposed Jacobi time‐wave packet approach (iv) a single modulator (here a ring modulator) is performing the whole scalar vector product in a single ...
Janosch Meier, Khaleda Mallick, Abhinand Venugopalan, Milind Bagul, Gouri Krishnan, Thomas Schneider   +5 more
wiley   +1 more source

Reconfigurable Geometric Phase Matching by Multilayered Nonlinear Thin‐Film Crystals

Laser &Photonics Reviews, EarlyView.
The concept of geometric phase matching is demonstrated as a dynamically reconfigurable approach for tunable nonlinear wave mixing in multilayered nonlinear thin‐film crystals. Experimental results reveal full modulation in a bilayer structure and near‐perfect spin‐selective phase matching of second‐harmonic generation in an eight‐layer configuration ...
Danielle Ben‐Haim, Mai Tal, Xiaoxi Xu, Tal Ellenbogen   +3 more
wiley   +1 more source

Terahertz time-domain spectroscopy of boron nitride nanotube-reinforced PMMA composites

Polymer Testing
Polymethyl methacrylate (PMMA) reinforced with boron nitride nanotubes (BNNT) at weight fill factors fw of 0.2 and 0.5 wt % are characterized by terahertz time-domain spectroscopy (THz-TDS).
Min Zhai, Feilin Gou, Changhong Ke, Wenlong He, Cong Zhai, Alexandre Locquet, D.S. Citrin   +6 more
doaj   +1 more source

Identification of black plastics with terahertz time-domain spectroscopy and machine learning. [PDF]

Sci Rep, 2023
Cielecki PP, Hardenberg M, Amariei G, Henriksen ML, Hinge M, Klarskov P.   +5 more
europepmc   +1 more source

Dual‐Comb Spectroscopy With Fully Controlled Repetition Rate and Offset Frequency of Quantum Cascade Laser Frequency Combs

Laser &Photonics Reviews, EarlyView.
Independent control of the repetition rate and offset frequency is demonstrated in quantum cascade laser frequency combs using radio‐frequency injection and thermal tuning. A revised comb model anchored at optical frequencies captures the unique behavior under radio‐frequency injection and enables precise frequency control.
Jie Liu, Philip Skochinski, Lawrence Hughes, Yamac Dikmelik, Kevin Lascola, Gerard Wysocki   +5 more
wiley   +1 more source

Quantum weak value amplified terahertz chiroptical measurement

Nanophotonics
A precise method for phase and amplitude detection in both the time and frequency domains of terahertz spectroscopy based on the weak-value amplification technique is proposed and demonstrated.
Xu Liping, Xu Jiangtao, Yao Xin, Zhang Rumin, Wen Gang, Wang Lei, Lu Xingxing, Li Zaoxia, Liu Wenquan, Wei Dongshan, Li Xiaoli, Chang Tianying, Cui Hong-Liang   +12 more
doaj   +1 more source

Material characterization with terahertz time-domain spectroscopy

, 2010
Terahertz time-domain spectroscopy systems were developed and used for the anaylsis and characterization of various materials. By using ultra-fast Ti:Sapphire and Er-doped fiber lasers, terahertz time-domain spectrometers of different configurations were
DEVRİM KÖSEOĞLU
core  

Broadband Chromatic Dispersion of Thermo‐Refractive Coefficients and Its Impact in Silicon Nitride Nonlinear Photonics

Laser &Photonics Reviews, EarlyView.
Chromatic dispersion of material thermo‐refractive coefficients is characterized across an octave in integrated Si3N4${\rm Si}_3{\rm N}_4$/SiO2${\rm SiO}_2$ platforms. A 7% variation is observed from telecom to visible wavelengths, while incorporating this dispersion into multiphysics modeling captures frequency‐dependent resonance shifts and improves ...
Shao‐Chien Ou, Grégory Moille, Kartik Srinivasan   +2 more
wiley   +1 more source