Phase sensitivity of high harmonic transient grating spectroscopy

被引：16

作者：

Mairesse, Y. ^{[1
,2
]}

Dudovich, N. ^{[2
,3
]}

Zeidler, D. ^{[2
,4
]}

Spanner, M. ^{[2
]}

Villeneuve, D. M. ^{[2
]}

Corkum, P. B. ^{[2
,5
]}

机构：

[1] Univ Bordeaux 1, CELIA, CNRS, CEA,Bordeaux 1,UMR5107, F-33405 Talence, France

[2] Natl Res Council Canada, Ottawa, ON K1A 0R6, Canada

[3] Weizmann Inst Sci, Dept Phys Complex Syst, IL-76100 Rehovot, Israel

[4] Carl Zeiss SMT AG, D-73447 Oberkochen, Germany

[5] Univ Ottawa, Ottawa, ON, Canada

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2010年 / 43卷 / 06期

关键词：

ALIGNED MOLECULES; GENERATION; PULSES;

D O I：

10.1088/0953-4075/43/6/065401

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the spatial profile of high order harmonics generated by a transient grating of rotational excitation. We show that the phase modulation of the harmonic emission as a function of molecular alignment is encoded in the diffraction pattern. In molecular nitrogen, the phase difference between aligned and isotropic molecules decreases from 1.6 rad for harmonic 19 to less than 0.3 rad for harmonic 27. In CO(2) we observe a strong phase jump for the highest harmonics. The position of this phase jump in the harmonic spectrum depends on the laser intensity, reflecting the contribution from multiple molecular orbitals to the harmonic emission.

引用

页数：5

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