scholarly journals Carrier-Suppressed Multiple-Single-Sideband Laser Source for Atom Cooling and Interferometry

2021 ◽  
Vol 16 (4) ◽  
Author(s):  
S. Templier ◽  
J. Hauden ◽  
P. Cheiney ◽  
F. Napolitano ◽  
H. Porte ◽  
...  
Keyword(s):  
Laser Source ◽  
Single Sideband ◽  
Atom Cooling

scholarly journals Tunable Multi-Frequency Optoelectronic Oscillator Based on a Microwave Photonic Filter and an Electrical Filter

2021 ◽  
Author(s):  
Jin Zhang ◽  
Yalan Wang ◽  
Xiang Li ◽  
Zhuangzhuang Liu ◽  
Jianghai Wo
Keyword(s):  
Phase Modulation ◽  
Laser Source ◽  
Central Frequency ◽  
Optoelectronic Oscillator ◽  
Microwave Photonic ◽  
Single Sideband ◽  
Wide Range ◽  
Fabry Perot ◽  
Oscillation Modes ◽  
Iron Garnet

Abstract We propose and experimentally demonstrate a multi-frequency optoelectronic oscillator (OEO) based on phase-modulation to intensity-modulation (PM-IM) conversion. A microwave photonic filter (MPF) incorporating an optical fiber Bragg grating Fabry-Perot (FBG-FP) filter and an electrical yttrium iron garnet (YIG) filter in two branches are used to select the oscillation modes of the OEO. By adjusting the wavelength of laser source or the central frequency of YIG filter, two frequencies can be tuned independently within a wide range. The single sideband (SSB) phase noises of the generated frequencies are measured experimentally. Moreover, the OEO shows potential ability to achieve more frequencies oscillation by multiplexing more optical and electrical filters.

A Novel Optoelectronic Oscillator with Series-Coupled Double Recirculating Delay Lines

2014 ◽  
Vol 986-987 ◽  
pp. 1730-1733
Author(s):  
Cheng Xin Li ◽  
Fu Shen Chen ◽  
Jing Yuan
Keyword(s):  
Free Spectral Range ◽  
Laser Source ◽  
Delay Lines ◽  
Optoelectronic Oscillator ◽  
Common Multiple ◽  
Least Common Multiple ◽  
Long Term Stability ◽  
Single Sideband ◽  
Broadband Laser

An optoelectronic oscillator (OEO) based on series-coupled double recirculating delay lines (SC-DRDLs) is analyzed and experimentally demonstrated. The SC-DRDLs composed by the coupling cascade of two RDLs, which the free spectral range (FSR) is least common multiple of the two RDLs’ FSR, and then the large FSR can be obtained by properly setting the loop lengths of two RDLs. By consociation with the dual loops system between the dual output of the SC-DRDLs and PBS, the high sidemode suppression performance can be achieved. Meantime, the incoherence of the SC-DRDLs can be performed by using an amplified spontaneous emission (ASE) broadband laser source. An experiment is carried out. A microwave signal with high spectral purity, long-term stability, low single-sideband (SSB) phase noise is generated.

Object Wave Determination by Single-Sideband Methods

1973 ◽  
Vol 31 ◽  
pp. 266-267
Author(s):  
Kenneth H. Downing ◽  
Benjamin M. Siegel
Keyword(s):  
Phase Shift ◽  
Carbon Films ◽  
Object Wave ◽  
Electron Wave ◽  
Phase Object ◽  
Heavy Atoms ◽  
Single Sideband ◽  
Thin Carbon ◽  
Additional Phase Shift ◽  
Additional Phase

Under the “weak phase object” approximation, the component of the electron wave scattered by an object is phase shifted by π/2 with respect to the unscattered component. This phase shift has been confirmed for thin carbon films by many experiments dealing with image contrast and the contrast transfer theory. There is also an additional phase shift which is a function of the atomic number of the scattering atom. This shift is negligible for light atoms such as carbon, but becomes significant for heavy atoms as used for stains for biological specimens. The light elements are imaged as phase objects, while those atoms scattering with a larger phase shift may be imaged as amplitude objects. There is a great deal of interest in determining the complete object wave, i.e., both the phase and amplitude components of the electron wave leaving the object.

LASER SOURCE OF POLARIZED PROTONS

1985 ◽  
Vol 46 (C2) ◽  
pp. C2-699-C2-701
Author(s):  
A. N. Zelenskii ◽  
S. A. Kokhanovskii ◽  
V. M. Lobashev ◽  
V. G. Polushkin
Keyword(s):  
Laser Source ◽  
Polarized Protons
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