Multiphoton ionization and optical breakdown of xenon in annular laser beams

被引：14

作者：

Peet, VE

Tsubin, RV

机构：

[1] TARTU STATE UNIV,FAC PHYS & CHEM,EE-2400 TARTU,ESTONIA

[2] INST PHYS,EE-2400 TARTU,ESTONIA

来源：

OPTICS COMMUNICATIONS | 1997年 / 134卷 / 1-6期

关键词：

multiphoton ionization; breakdown; laser beams; xenon;

D O I：

10.1016/S0030-4018(96)00539-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By measuring selective laser-induced breakdown in xenon near the three-photon 6s resonance it has been shown that the ionization spectra experience remarkable transformations and the breakdown threshold in some spectral regions is reduced when the excitation is performed by laser beams with a blocked central part (annular beams). These effects have been explained by considering an internally-generated third harmonic. Due to the self-phase-matching mechanism the third harmonic in a focused annular beam can be generated in a much broader spectral range than in ordinary Gaussian beams. It leads to the appearance of additional ionization pathways and transforms the ionization spectra.

引用

收藏

页码：69 / 74

页数：6

相关论文

共 20 条

[1] ABSOLUTE OPTICAL OSCILLATOR-STRENGTHS FOR THE ELECTRONIC EXCITATION OF ATOMS AT HIGH-RESOLUTION .3. THE PHOTOABSORPTION OF ARGON, KRYPTON, AND XENON [J].

CHAN, WF ;

COOPER, G ;

GUO, X ;

BURTON, GR ;

BRION, CE .

PHYSICAL REVIEW A, 1992, 46 (01) :149-171

[2] CANCELLATION EFFECTS IN 4-PHOTON-RESONANT 5-PHOTON IONIZATION THROUGH THE NF J=2 STATES OF XE [J].

CHARALAMBIDIS, D ;

XING, X ;

PETRAKIS, J ;

FOTAKIS, C .

PHYSICAL REVIEW A, 1991, 44 (01) :R24-R27

[3] MODIFICATION OF MULTIPHOTON IONIZATION SPECTRA VIA 3RD-HARMONIC GENERATION IN FOCUSED LASER-BEAMS [J].

CHARALAMBIDIS, D ;

STOCKDALE, JAD ;

FOTAKIS, C .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1994, 32 (03) :191-196

[4] INFLUENCE OF 3RD-HARMONIC FIELDS ON MULTIPHOTON IONIZATION OF NOBLE-GASES IN UNFOCUSED LASER-BEAMS [J].

GARRETT, WR ;

FERRELL, WR ;

PAYNE, MG ;

MILLER, JC .

PHYSICAL REVIEW A, 1986, 34 (02) :1165-1177

[5]

GARRETT WR, 1986, PHYS REV A, V34, P5032

[6] SELF-PHASE-MATCHING MECHANISM FOR EFFICIENT HARMONIC-GENERATION PROCESSES IN A RING PUMP BEAM GEOMETRY [J].

GLUSHKO, B ;

KRYZHANOVSKY, B ;

SARKISYAN, D .

PHYSICAL REVIEW LETTERS, 1993, 71 (02) :243-246

[7] RESONANCE-ENHANCED MULTIPHOTON IONIZATION - INTERFERENCE EFFECTS DUE TO HARMONIC-GENERATION [J].

JACKSON, DJ ;

WYNNE, JJ ;

KES, PH .

PHYSICAL REVIEW A, 1983, 28 (02) :781-794

[8] RESONANTLY ENHANCED MULTI-PHOTON IONIZATION AND THIRD-HARMONIC GENERATION IN XENON GAS [J].

MILLER, JC ;

COMPTON, RN ;

PAYNE, MG ;

GARRETT, WW .

PHYSICAL REVIEW LETTERS, 1980, 45 (02) :114-116

[9] 3RD-HARMONIC GENERATION AND MULTI-PHOTON IONIZATION IN RARE-GASES [J].

MILLER, JC ;

COMPTON, RN .

PHYSICAL REVIEW A, 1982, 25 (04) :2056-2063

[10] THEORY OF THE EFFECT OF 3RD-HARMONIC GENERATION ON 3-PHOTON RESONANTLY ENHANCED MULTIPHOTON IONIZATION IN FOCUSED BEAMS [J].

PAYNE, MG ;

GARRETT, WR .

PHYSICAL REVIEW A, 1983, 28 (06) :3409-3429