Measurement of field-free molecular alignment by balanced weak field polarization technique

We demonstrate the measurement of field-free molecular alignment of air can be realized by combining the weak field polarization technique (WFPT) with a balanced detection system. The measured signal is proportional to the alignment parameter. Periodic revival structures of the transient alignment a...

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Main Authors: Peng Peng, Ya Bai, Na Li, Peng Liu
Format: Article
Language:English
Published: AIP Publishing LLC 2015-12-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4937476
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author Peng Peng
Ya Bai
Na Li
Peng Liu
author_facet Peng Peng
Ya Bai
Na Li
Peng Liu
author_sort Peng Peng
collection DOAJ
description We demonstrate the measurement of field-free molecular alignment of air can be realized by combining the weak field polarization technique (WFPT) with a balanced detection system. The measured signal is proportional to the alignment parameter. Periodic revival structures of the transient alignment and permanent alignment between revivals can be detected clearly by a single measurement with high sensitivity. Fourier transform spectrum of the measured signal agrees well with the calculation result and provides information of the populations of different J states in the rotational wave packet.
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spelling doaj.art-a19a2beb237d4d1a9e3cb3a1193b53f72022-12-21T23:23:56ZengAIP Publishing LLCAIP Advances2158-32262015-12-01512127205127205-810.1063/1.4937476012512ADVMeasurement of field-free molecular alignment by balanced weak field polarization techniquePeng Peng0Ya Bai1Na Li2Peng Liu3State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaState Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaState Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaState Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaWe demonstrate the measurement of field-free molecular alignment of air can be realized by combining the weak field polarization technique (WFPT) with a balanced detection system. The measured signal is proportional to the alignment parameter. Periodic revival structures of the transient alignment and permanent alignment between revivals can be detected clearly by a single measurement with high sensitivity. Fourier transform spectrum of the measured signal agrees well with the calculation result and provides information of the populations of different J states in the rotational wave packet.http://dx.doi.org/10.1063/1.4937476
spellingShingle Peng Peng
Ya Bai
Na Li
Peng Liu
Measurement of field-free molecular alignment by balanced weak field polarization technique
AIP Advances
title Measurement of field-free molecular alignment by balanced weak field polarization technique
title_full Measurement of field-free molecular alignment by balanced weak field polarization technique
title_fullStr Measurement of field-free molecular alignment by balanced weak field polarization technique
title_full_unstemmed Measurement of field-free molecular alignment by balanced weak field polarization technique
title_short Measurement of field-free molecular alignment by balanced weak field polarization technique
title_sort measurement of field free molecular alignment by balanced weak field polarization technique
url http://dx.doi.org/10.1063/1.4937476
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AT yabai measurementoffieldfreemolecularalignmentbybalancedweakfieldpolarizationtechnique
AT nali measurementoffieldfreemolecularalignmentbybalancedweakfieldpolarizationtechnique
AT pengliu measurementoffieldfreemolecularalignmentbybalancedweakfieldpolarizationtechnique