Observation of three-photon absorption and saturation of two-photon absorption in amorphous nanolayered Se/As2S3 thin film structures

K. V. Adarsh, K. S. Sangunni, C. S Suchand Sandeep, Reji Philip, S. Kökényesi, V. Takáts

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We have studied the nonlinear optical properties of nanolayered Se/ As2 S3 film with a modulation period of 10 nm and a total thickness of 1.15 μm at two [1064 nm (8 ns) and 800 nm (20 ps)] wavelengths using the standard Z -scan technique. Three-photon absorption was observed at off-resonant excitation and saturation of two-photon absorption at quasiresonant excitation. The observation of the saturation of two-photon absorption is because the pulse duration is shorter than the thermalization time of the photocreated carriers in their bands and three-photon absorption is due to high excitation irradiance.

Original languageEnglish
Article number026102
JournalJournal of Applied Physics
Volume102
Issue number2
DOIs
Publication statusPublished - 2007

Fingerprint

saturation
photons
thin films
excitation
irradiance
pulse duration
modulation
optical properties
wavelengths

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Observation of three-photon absorption and saturation of two-photon absorption in amorphous nanolayered Se/As2S3 thin film structures. / Adarsh, K. V.; Sangunni, K. S.; Sandeep, C. S Suchand; Philip, Reji; Kökényesi, S.; Takáts, V.

In: Journal of Applied Physics, Vol. 102, No. 2, 026102, 2007.

Research output: Contribution to journalArticle

@article{cf59e3003c7945c0846dac933a6adbad,
title = "Observation of three-photon absorption and saturation of two-photon absorption in amorphous nanolayered Se/As2S3 thin film structures",
abstract = "We have studied the nonlinear optical properties of nanolayered Se/ As2 S3 film with a modulation period of 10 nm and a total thickness of 1.15 μm at two [1064 nm (8 ns) and 800 nm (20 ps)] wavelengths using the standard Z -scan technique. Three-photon absorption was observed at off-resonant excitation and saturation of two-photon absorption at quasiresonant excitation. The observation of the saturation of two-photon absorption is because the pulse duration is shorter than the thermalization time of the photocreated carriers in their bands and three-photon absorption is due to high excitation irradiance.",
author = "Adarsh, {K. V.} and Sangunni, {K. S.} and Sandeep, {C. S Suchand} and Reji Philip and S. K{\"o}k{\'e}nyesi and V. Tak{\'a}ts",
year = "2007",
doi = "10.1063/1.2753581",
language = "English",
volume = "102",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "2",

}

TY - JOUR

T1 - Observation of three-photon absorption and saturation of two-photon absorption in amorphous nanolayered Se/As2S3 thin film structures

AU - Adarsh, K. V.

AU - Sangunni, K. S.

AU - Sandeep, C. S Suchand

AU - Philip, Reji

AU - Kökényesi, S.

AU - Takáts, V.

PY - 2007

Y1 - 2007

N2 - We have studied the nonlinear optical properties of nanolayered Se/ As2 S3 film with a modulation period of 10 nm and a total thickness of 1.15 μm at two [1064 nm (8 ns) and 800 nm (20 ps)] wavelengths using the standard Z -scan technique. Three-photon absorption was observed at off-resonant excitation and saturation of two-photon absorption at quasiresonant excitation. The observation of the saturation of two-photon absorption is because the pulse duration is shorter than the thermalization time of the photocreated carriers in their bands and three-photon absorption is due to high excitation irradiance.

AB - We have studied the nonlinear optical properties of nanolayered Se/ As2 S3 film with a modulation period of 10 nm and a total thickness of 1.15 μm at two [1064 nm (8 ns) and 800 nm (20 ps)] wavelengths using the standard Z -scan technique. Three-photon absorption was observed at off-resonant excitation and saturation of two-photon absorption at quasiresonant excitation. The observation of the saturation of two-photon absorption is because the pulse duration is shorter than the thermalization time of the photocreated carriers in their bands and three-photon absorption is due to high excitation irradiance.

UR - http://www.scopus.com/inward/record.url?scp=34547577450&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547577450&partnerID=8YFLogxK

U2 - 10.1063/1.2753581

DO - 10.1063/1.2753581

M3 - Article

AN - SCOPUS:34547577450

VL - 102

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 2

M1 - 026102

ER -