Rydberg excitation of neutral nitric oxide molecules instrong UV and near-IR laser fields

doi:10.1088/1674-1056/24/6/063303

Abstract Rydberg state excitations of neutral nitric oxide molecules are studied in strong ultraviolet (UV) and near-infra-red (IR) laser fields using a linear time-of-flight (TOF) mass spectrometer with the pulsed electronic field ionization method. The yield of Rydberg molecules is measured as a function of laser intensity and ellipticity, and the results in UV laser fields are compared with those in near-IR laser fields. The present study provides the first experimental evidence of neutral Rydberg molecules surviving in a strong laser field. The results indicate that a rescattering-after-tunneling process is the main contribution to the formation of Rydberg molecules in strong near-IR laser fields, while multi-photon excitation may play an important role in the strong UV laser fields.

Keywords: strong laser fields neutral Rydberg excitation nitric oxide

Received: 24 December 2014
Revised: 09 January 2015
Accepted manuscript online:

PACS:

33.80.Rv

(Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))

Fund: Project supported by the National Basic Research Program of China (Grant No. 2013CB922200) and the National Natural Science Foundation of China (Grant Nos. 11034003 and 11274140).

Corresponding Authors: Xu Hai-Feng
E-mail: xuhf@jlu.edu.cn

About author: 33.80.Rv

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Lv Hang (吕航), Zhang Jun-Feng (张军峰), Zuo Wan-Long (左万龙), Xu Hai-Feng (徐海峰), Jin Ming-Xing (金明星), Ding Da-Jun (丁大军) Rydberg excitation of neutral nitric oxide molecules instrong UV and near-IR laser fields 2015 Chin. Phys. B 24 063303

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Rydberg excitation of neutral nitric oxide molecules instrong UV and near-IR laser fields

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