Results 141 to 150 of about 34,641 (302)

Spaser linewidth enhancement

, 2012
The concept of spaser, as the coherent near-field generator, based on nanometric plasmonic resonators, has been successfully demonstrated in number of experiments. Here we have developed the theoretical framework for description of the basic properties of the spaser linewidth and, in particular, linewidth enhancement.
Ginzburg, Pavel, Zayats, Anatoly V.
openaire   +2 more sources

Theory of the Linewidth-Power Product of Photonic-Crystal Surface-Emitting Lasers

A general theory for the intrinsic (Lorentzian) linewidth of photonic–crystal surface–emitting lasers (PCSELs) is presented. The effect of spontaneous emission is modeled by a classical Langevin force entering the equation for the slowly varying waves ...
Kuhn, Eduard, Wenzel, Hans, King, Ben, Radziunas, Mindaugas   +3 more
core   +1 more source

Narrow-Linewidth Microwave Generation Using a Self-Injected DBR Laser Diode

, 2009
A novel technique for generating narrow-linewidth microwave or millimeter-wave signals is proposed. In this scheme, a delayed self-injected distributed Bragg reflector laser diode, which is tuned by a low-frequency square-wave voltage, is used to ...
Zhang HG, Han W, Xie L, Ke JH, Zhang BH, Zhu NH, Zhao LJ, Zhang HG CAS Inst Semicond State Key Lab Integrated Optoelect Beijing 100083 Peoples R China. E-mail Address: nhzhu@semi.ac.cn, Chen W, Wang W, Yuan HQ, Wang X, Man JW   +12 more
core  

Pump-induced stimulated superradiant Smith-Purcell radiation with ultra-narrow linewidth

eLight
Lasers with the gain medium of gas, liquid, semiconductor, and solid could generate coherent light with rather narrow spectral linewidth, which play an important role in the fields of communication, measurement, sensing, and so on. Although free electron
Yuechai Lin, Jinyu Li, Fang Liu, Weisi Meng, Pan Pan, Hanqi Feng, Wei Zhang, Xue Feng, Kaiyu Cui, Jinjun Feng, Yidong Huang   +10 more
doaj   +1 more source

1970 W 1030 nm Single-Mode All-Fiber Master Oscillator Power Amplifier with ~3.2 GHz Linewidth Based on Ultra-Low NA Active Fiber

Photonics
A high-power narrow-linewidth fiber laser with single-mode beam quality is experimentally demonstrated. By employing a cascaded phase modulation strategy, the stimulated Brillouin scattering (SBS) threshold of the laser is effectively increased from 973 ...
Yang Liu, Xiaoyong Xu, Mengfan Cui, Wei Li, Chongwei Wang, Yan Peng, Junjie Zheng, Zilun Chen, Yisha Chen, Wei Liu, Hu Xiao, Zefeng Wang, Pengfei Ma   +12 more
doaj   +1 more source

In situ measurement of spectral linewidth in wavelength-modulated signals for frequency-modulated continuous-wave LiDAR systems

AIP Advances
This paper advances an in situ method to measure the spectral linewidth directly from the currently generated wavelength-modulated signals in frequency-modulated continuous-wave (FMCW) light detection and ranging (LiDAR) systems, diverging from ...
Jongpil La, Munhyun Han, Jieun Choi, Bongki Mheen   +3 more
doaj   +1 more source

Surface phonon linewidth of Al

, 1994
In this paper we present a numerical calculation of the Rayleigh wave phonon linewidth based on a cubic anharmonic expansion of the interatomic potential of the crystal.
BORTOLANI, Virginio, FRANCHINI, Anna, Maradudin A. A., SANTORO, Giorgio, Wallis R. F.   +4 more
core  

Controlling the Guanidinium Cation Rotation by Cation–π Interactions

Angewandte Chemie International Edition, EarlyView.
A lanthanide π‐container has been employed to trap a guanidinium cation inside the aromatic cavity by cation–π interactions. X‐ray crystallography and solid‐state nuclear magnetic resonance (NMR) spectroscopy at fast magic‐angle spinning (MAS) frequencies have been utilized to probe the underlying host–guest interactions.
Hannah Busch, Lennart Günzel, Ettore Bartalucci, Robert Schuster, Christian Zocher, Martin Börner, Chandan K. Das, Florian Taube, Björn Corzilius, Maria Fyta, Matthias Ernst, Berthold Kersting, Thomas Wiegand   +12 more
wiley   +1 more source

Ultra-Narrow Laser Linewidth Measurement

, 2006
In this report, we give a deeper investigation of the loss-compensated recirculating delayed self-heterodyne interferometer (LC-RDSHI) for ultra-narrow linewidth measurement, including the theoretical analysis, experimental implementation, further ...
Chen, Xiaopei
core  

Linewidth of Josephson Flux Flow Oscillators

, 2020
the differential resistances associated both with the bias current and with the applied magnetic field on the radiation linewidth, has been studied.
A L Pankratov, A S Sobolev, V V Khodos, J Mygind, V L Vaks, A M Baryshev, P N Dmitriev, V P Koshelets, P R Wesselius   +8 more
core