Picosecond near-to-mid-infrared absorption of pulse-injected small polarons in magnesium doped lithium niobate

Felix Freytag, Phillip Booker, G. Corradi, Simon Messerschmidt, Andreas Krampf, Mirco Imlau

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Femtosecond-pulse-induced (Epump = 2:5 eV) picosecond infrared absorption is studied in the spectral region between 0.30 eV and 1.05 eV in LiNbO3:Mg. We find a noninstantaneous mid-infrared absorption peak in the time domain up to 1 ps and a broad-band, long-lived absorption (maximum at 0.85 eV, width ≈ 0:5 eV), for t > 1 ps. The modelling succeeds by considering small Nb4+ Nb electron polaron formation along the sequence: (i) twophoton injection of hot electron-hole pairs at Nb-O-octahedra, (ii) dissociation and electron cooling by electron-phonon-scattering, and (iii) electron self-localization by strong electronphonon- coupling.

Original languageEnglish
Pages (from-to)1505-1514
Number of pages10
JournalOptical Materials Express
Volume8
Issue number6
DOIs
Publication statusPublished - Jan 1 2018

Fingerprint

Polarons
Infrared absorption
Magnesium
Laser pulses
Lithium
Electrons
Gene Conversion
Phonon scattering
Electron scattering
Hot electrons
Ultrashort pulses
Cooling
lithium niobate

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Picosecond near-to-mid-infrared absorption of pulse-injected small polarons in magnesium doped lithium niobate. / Freytag, Felix; Booker, Phillip; Corradi, G.; Messerschmidt, Simon; Krampf, Andreas; Imlau, Mirco.

In: Optical Materials Express, Vol. 8, No. 6, 01.01.2018, p. 1505-1514.

Research output: Contribution to journalArticle

Freytag, Felix ; Booker, Phillip ; Corradi, G. ; Messerschmidt, Simon ; Krampf, Andreas ; Imlau, Mirco. / Picosecond near-to-mid-infrared absorption of pulse-injected small polarons in magnesium doped lithium niobate. In: Optical Materials Express. 2018 ; Vol. 8, No. 6. pp. 1505-1514.
@article{3a4d9454e57a4257a08190aa91c0ccc7,
title = "Picosecond near-to-mid-infrared absorption of pulse-injected small polarons in magnesium doped lithium niobate",
abstract = "Femtosecond-pulse-induced (Epump = 2:5 eV) picosecond infrared absorption is studied in the spectral region between 0.30 eV and 1.05 eV in LiNbO3:Mg. We find a noninstantaneous mid-infrared absorption peak in the time domain up to 1 ps and a broad-band, long-lived absorption (maximum at 0.85 eV, width ≈ 0:5 eV), for t > 1 ps. The modelling succeeds by considering small Nb4+ Nb electron polaron formation along the sequence: (i) twophoton injection of hot electron-hole pairs at Nb-O-octahedra, (ii) dissociation and electron cooling by electron-phonon-scattering, and (iii) electron self-localization by strong electronphonon- coupling.",
author = "Felix Freytag and Phillip Booker and G. Corradi and Simon Messerschmidt and Andreas Krampf and Mirco Imlau",
year = "2018",
month = "1",
day = "1",
doi = "10.1364/OME.8.001505",
language = "English",
volume = "8",
pages = "1505--1514",
journal = "Optical Materials Express",
issn = "2159-3930",
publisher = "The Optical Society",
number = "6",

}

TY - JOUR

T1 - Picosecond near-to-mid-infrared absorption of pulse-injected small polarons in magnesium doped lithium niobate

AU - Freytag, Felix

AU - Booker, Phillip

AU - Corradi, G.

AU - Messerschmidt, Simon

AU - Krampf, Andreas

AU - Imlau, Mirco

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Femtosecond-pulse-induced (Epump = 2:5 eV) picosecond infrared absorption is studied in the spectral region between 0.30 eV and 1.05 eV in LiNbO3:Mg. We find a noninstantaneous mid-infrared absorption peak in the time domain up to 1 ps and a broad-band, long-lived absorption (maximum at 0.85 eV, width ≈ 0:5 eV), for t > 1 ps. The modelling succeeds by considering small Nb4+ Nb electron polaron formation along the sequence: (i) twophoton injection of hot electron-hole pairs at Nb-O-octahedra, (ii) dissociation and electron cooling by electron-phonon-scattering, and (iii) electron self-localization by strong electronphonon- coupling.

AB - Femtosecond-pulse-induced (Epump = 2:5 eV) picosecond infrared absorption is studied in the spectral region between 0.30 eV and 1.05 eV in LiNbO3:Mg. We find a noninstantaneous mid-infrared absorption peak in the time domain up to 1 ps and a broad-band, long-lived absorption (maximum at 0.85 eV, width ≈ 0:5 eV), for t > 1 ps. The modelling succeeds by considering small Nb4+ Nb electron polaron formation along the sequence: (i) twophoton injection of hot electron-hole pairs at Nb-O-octahedra, (ii) dissociation and electron cooling by electron-phonon-scattering, and (iii) electron self-localization by strong electronphonon- coupling.

UR - http://www.scopus.com/inward/record.url?scp=85047021070&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85047021070&partnerID=8YFLogxK

U2 - 10.1364/OME.8.001505

DO - 10.1364/OME.8.001505

M3 - Article

VL - 8

SP - 1505

EP - 1514

JO - Optical Materials Express

JF - Optical Materials Express

SN - 2159-3930

IS - 6

ER -