Exciton-seeded multiphoton ionization in bulk SiO2

被引：99

作者：

Grojo, D. ^{[1
]}

Gertsvolf, M. ^{[1
,2
]}

Lei, S. ^{[3
]}

Barillot, T. ^{[1
]}

Rayner, D. M. ^{[1
]}

Corkum, P. B. ^{[1
,2
]}

机构：

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

[2] Univ Ottawa, Ottawa, ON K1N 6N5, Canada

[3] Kansas State Univ, Manhattan, KS 66506 USA

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 21期

关键词：

FEMTOSECOND OPTICAL-BREAKDOWN; FUSED-SILICA; DIELECTRICS; ABSORPTION; DYNAMICS;

D O I：

10.1103/PhysRevB.81.212301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In a femtosecond pump-probe experiment the pump pulse injects a modest density of free carriers by multiphoton absorption. Measuring the nonlinear absorption of the probe pulse we observe exciton-seeded multiphoton ionization. The excitons self-trap in SiO2 in <300 fs following free-carrier injection and decay biexponentially with lifetimes of 34 +/- 8 and 338 +/- 67 ps at room temperature. The extent of the probe-pulse absorption provides a model-independent demonstration that avalanche ionization plays a significant role in free-carrier generation by laser pulses as short as 45 fs. Free-carriers injected into a dielectric from extreme-ultraviolet (XUV) sources created by high harmonic or attosecond pulse generation and then avalanched with a perfectly synchronized infrared (fundamental) probe pulse, can provide a route to nanoscale laser machining.

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页数：4

相关论文

共 18 条

[1] Pulse duration dependence of femtosecond-laser-fabricated nanogratings in fused silica [J].

Hnatovsky, C ;

Taylor, RS ;

Rajeev, PP ;

Simova, E ;

Bhardwaj, VR ;

Rayner, DM ;

Corkum, PB .

APPLIED PHYSICS LETTERS, 2005, 87 (01)

[2] Time-resolved spectroscopic study of self-trapped excitons in germanium oxides [J].

Itoh, C ;

Tanimura, K ;

Trukhin, AN .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1996, 116 (1-4) :72-76

[3] LUMINESCENCE AND DEFECT FORMATION IN UNDENSIFIED AND DENSIFIED AMORPHOUS SIO2 [J].

ITOH, C ;

SUZUKI, T ;

ITOH, N .

PHYSICAL REVIEW B, 1990, 41 (06) :3794-3799

[4] White-light filaments for atmospheric analysis [J].

Kasparian, J ;

Rodriguez, M ;

Méjean, G ;

Yu, J ;

Salmon, E ;

Wille, H ;

Bourayou, R ;

Frey, S ;

André, YB ;

Mysyrowicz, A ;

Sauerbrey, R ;

Wolf, JP ;

Wöste, L .

SCIENCE, 2003, 301 (5629) :61-64

[5] Laser-induced modification of bulk fused silica by femtosecond pulses [J].

Kononenko, V. V. ;

Pashinin, V. P. ;

Komlenok, M. S. ;

Konov, V. I. .

LASER PHYSICS, 2009, 19 (06) :1294-1299

[6] Femtosecond optical breakdown in dielectrics [J].

Lenzner, M ;

Kruger, J ;

Sartania, S ;

Cheng, Z ;

Spielmann, C ;

Mourou, G ;

Kautek, W ;

Krausz, F .

PHYSICAL REVIEW LETTERS, 1998, 80 (18) :4076-4079

[7] Ultrafast electron dynamics in femtosecond optical breakdown of dielectrics [J].

Li, M ;

Menon, S ;

Nibarger, JP ;

Gibson, GN .

PHYSICAL REVIEW LETTERS, 1999, 82 (11) :2394-2397

[8] Subpicosecond study of carrier trapping dynamics in wide-band-gap crystals [J].

Martin, P ;

Guizard, S ;

Daguzan, P ;

Petite, G ;

DOliveira, P ;

Meynadier, P ;

Perdrix, M .

PHYSICAL REVIEW B, 1997, 55 (09) :5799-5810

[9] Time-resolved study of laser-induced breakdown in dielectrics [J].

Quéré, F ;

Guizard, S ;

Martin, P .

EUROPHYSICS LETTERS, 2001, 56 (01) :138-144

[10] Memory in nonlinear ionization of transparent solids [J].

Rajeev, P. P. ;

Gertsvolf, M. ;

Simova, E. ;

Hnatovsky, C. ;

Taylor, R. S. ;

Bhardwaj, V. R. ;

Rayner, D. M. ;

Corkum, P. B. .

PHYSICAL REVIEW LETTERS, 2006, 97 (25)