Rotational Coherence Encoded in an “Air-Laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field

We investigate lasing action in aligned nitrogen molecular ions (N_{2}^{+}) produced in an intense laser field. We find that, besides the population inversion between the B^{2}Σ_{u}^{+}-X^{2}Σ_{g}^{+} states, which is responsible for the observed simulated amplification of a seed pulse, a rotational...

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Main Authors:	Haisu Zhang, Chenrui Jing, Jinping Yao, Guihua Li, Bin Zeng, Wei Chu, Jielei Ni, Hongqiang Xie, Huailiang Xu, See Leang Chin, Kaoru Yamanouchi, Ya Cheng, Zhizhan Xu
Format:	Article
Language:	English
Published:	American Physical Society 2013-10-01
Series:	Physical Review X
Online Access:	http://doi.org/10.1103/PhysRevX.3.041009

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spelling	doaj-3d568fc60339410f857227c4d1e65e922020-11-24T22:15:47ZengAmerican Physical SocietyPhysical Review X2160-33082013-10-013404100910.1103/PhysRevX.3.041009Rotational Coherence Encoded in an “Air-Laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser FieldHaisu ZhangChenrui JingJinping YaoGuihua LiBin ZengWei ChuJielei NiHongqiang XieHuailiang XuSee Leang ChinKaoru YamanouchiYa ChengZhizhan XuWe investigate lasing action in aligned nitrogen molecular ions (N_{2}^{+}) produced in an intense laser field. We find that, besides the population inversion between the B^{2}Σ_{u}^{+}-X^{2}Σ_{g}^{+} states, which is responsible for the observed simulated amplification of a seed pulse, a rotational wave packet in the ground vibrational state (v=0) of the excited electronic B^{2}Σ_{u}^{+} state has been created in N_{2}^{+}. The rotational coherence can faithfully encode its characteristics into the amplified seed pulses, enabling reconstruction of rotational wave packets of molecules in a single-shot detection manner from the frequency-resolved laser spectrum. Our results suggest that the air laser can potentially provide a promising tool for remote characterization of coherent molecular rotational wave packets.http://doi.org/10.1103/PhysRevX.3.041009
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Haisu Zhang Chenrui Jing Jinping Yao Guihua Li Bin Zeng Wei Chu Jielei Ni Hongqiang Xie Huailiang Xu See Leang Chin Kaoru Yamanouchi Ya Cheng Zhizhan Xu
spellingShingle	Haisu Zhang Chenrui Jing Jinping Yao Guihua Li Bin Zeng Wei Chu Jielei Ni Hongqiang Xie Huailiang Xu See Leang Chin Kaoru Yamanouchi Ya Cheng Zhizhan Xu Rotational Coherence Encoded in an “Air-Laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field Physical Review X
author_facet	Haisu Zhang Chenrui Jing Jinping Yao Guihua Li Bin Zeng Wei Chu Jielei Ni Hongqiang Xie Huailiang Xu See Leang Chin Kaoru Yamanouchi Ya Cheng Zhizhan Xu
author_sort	Haisu Zhang
title	Rotational Coherence Encoded in an “Air-Laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field
title_short	Rotational Coherence Encoded in an “Air-Laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field
title_full	Rotational Coherence Encoded in an “Air-Laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field
title_fullStr	Rotational Coherence Encoded in an “Air-Laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field
title_full_unstemmed	Rotational Coherence Encoded in an “Air-Laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field
title_sort	rotational coherence encoded in an “air-laser” spectrum of nitrogen molecular ions in an intense laser field
publisher	American Physical Society
series	Physical Review X
issn	2160-3308
publishDate	2013-10-01
description	We investigate lasing action in aligned nitrogen molecular ions (N_{2}^{+}) produced in an intense laser field. We find that, besides the population inversion between the B^{2}Σ_{u}^{+}-X^{2}Σ_{g}^{+} states, which is responsible for the observed simulated amplification of a seed pulse, a rotational wave packet in the ground vibrational state (v=0) of the excited electronic B^{2}Σ_{u}^{+} state has been created in N_{2}^{+}. The rotational coherence can faithfully encode its characteristics into the amplified seed pulses, enabling reconstruction of rotational wave packets of molecules in a single-shot detection manner from the frequency-resolved laser spectrum. Our results suggest that the air laser can potentially provide a promising tool for remote characterization of coherent molecular rotational wave packets.
url	http://doi.org/10.1103/PhysRevX.3.041009
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Rotational Coherence Encoded in an “Air-Laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field

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