Results 81 to 90 of about 722 (280)
An optically guided atomic fountain [PDF]
, 1999 This thesis describes the development of a laser-cooling experiment aimed at efficient transfer of cold atoms over a short distance, for loading into a conservative atom trap.
Davies, Hilary Jane, Davies, H.J.
core
Laser-pumped double-resonance atomic clock using a micro-fabricated Rb cell
, 2011 We present first results on a laser-pumped, double resonance (DR) Rubidium atomic clock, based on microfabricated Rb vapour cells. The study aims towards a miniature atomic clock [1] based on DR, using a lowpower laser as pump light source and a ...
C. Affolderbach +9 more
core +1 more source
Perspectives of Active Atomic Clock Based on Modelocked Semiconductor Laser with Rubidium Vapor Cell Saturable Absorber [PDF]
, 2015 Atomic clocks are a vital technology in the day to day operation of modern society. While passive Rb and Cs microwave atomic clocks find widespread practical applications today, active atomic clocks have the potential to surpass them in frequency ...
Zeng, Xi
core +1 more source
Advanced Materials Technologies, EarlyView.ABSTRACT Molybdenum disulfide (MoS2) has attracted attention as a promising material due to the growing demand for environmentally friendly, cost‐effective, and efficient water treatment techniques. With its physicochemical characteristics, this stratified bidimensional material allows it to be highly effective in adsorption and catalytic performance ...
Pariksha Bishnoi +4 more
wiley +1 more source
3D printed microwave cavity for atomic clock applications: proof of concept
, 2018 The authors present the realisation and characterisation of an additively manufactured (AM) microwave resonator cavity for double-resonance (DR) vapour-cell atomic clocks.
de Rijk, E. +6 more
core +2 more sources
Undifferenced precise time transfer with information‐constraints
IET Radar, Sonar & NavigationSatellite navigation systems enable long‐distance and high‐precision time transfers. The authors proposed an undifferenced precise time transfer method with information constraints in this study.
Mingyue Liu +6 more
doaj +1 more source
Research of 6.835GHz Microwave Devices in Miniaturized Rubidium Atomic Clock [PDF]
, 2014 铷气室型原子频标结构简单、体积小、重量轻，并且具有良好的稳定性，因此得到了广泛应用。近年来，由于MEMS技术的迅速发展，以及小型原子钟在实际应用上的优越性，实现铷原子频标的微小型化成为各国的主要研究热点。针对铷原子频标的量子部分中需要提供6.835GHz的微波信号，本文主要从微小型化方向研究提供该信号的两种微波器件：介质谐振腔和MEMS电感，并对MEMS电感微制造过程中的电镀工艺做了详细研究。论文主要分为以下三个部分： 第一，对铷原子频标中6.835GHz微波谐振腔进行小型化研究 ...
魏秀燕
core
Free-Space Optical Time Transfer between an Atomic Frequency Standard and a Simple Optical Clock
, 2019 We present a tabletop demonstration of free-space time-frequency transfer from a compact optical rubidium atomic frequency standard to stabilize a clock based on a fiber laser locked to fiber-delay line compared with a cavity-stabilized ...
Kyle Martin +9 more
core +1 more source
On‐Chip Saturated Absorption of CO2 in a Silicon‐on‐Sapphire Waveguide
Advanced Optical Materials, EarlyView.We demonstrate the first saturated absorption of a molecular gas on a planar photonic chip. By coupling carbon dioxide with the tightly confined light of a silicon‐on‐sapphire waveguide, we achieve optical saturation using only milliwatt powers. This breakthrough provides a practical, low‐power foundation for creating ultra‐compact mid‐infrared ...
Shahar Edelstein +2 more
wiley +1 more source
Remote SensingThe signal-in-space range error (SISRE) has a direct impact on the performance of global navigation satellite systems (GNSSs). It is an important indicator of navigation satellite space server performance.
Zhenghua Dong, Songlin Zhang
doaj +1 more source