Abstract
The paper presents the results of a study on the formation and evolution of short-lived radiation-induced defects in wide band-gap optical materials with the mobile cations. The spectra and decay kinetics of transient optical absorption (TOA) of radiation defects in crystals of potassium and ammonium dihydro phosphates (KH 2PO 4 and NH 4H 2PO 4) were studied by means of the method of pulsed optical absorption spectroscopy with the nanosecond time resolution under excitation with an electron-beam (250 keV, 10 ns). A model of electron tunneling between the electron and hole centers under conditions of the thermally stimulated mobility of one of the recombination process partners was developed. The model describes all the features of the induced optical density relaxation kinetics observed in nonlinear optical crystals KH 2PO 4 and NH 4H 2PO 4 in a broad decay-time range of 10 ns-10 s after the pulse of radiation exposure. The paper discusses the origin of radiation defects that determine the TOA, as well as the dependence of the decay kinetics of the TOA on the temperature, excitation power and other experimental conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 2030-2034 |
| Number of pages | 5 |
| Journal | Optical Materials |
| Volume | 34 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Oct 2012 |
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Keywords
- Decay kinetics
- Luminescent materials
- Spectroscopy with time resolution
- Transient optical absorption
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
- Atomic and Molecular Physics, and Optics
- Computer Science(all)
Cite this
A pulsed optical absorption spectroscopy study of wide band-gap optical materials. / Ogorodnikov, I. N.; Kiseleva, M. S.; Yakovlev, V. Yu.
In: Optical Materials, Vol. 34, No. 12, 10.2012, p. 2030-2034.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A pulsed optical absorption spectroscopy study of wide band-gap optical materials
AU - Ogorodnikov, I. N.
AU - Kiseleva, M. S.
AU - Yakovlev, V. Yu
PY - 2012/10
Y1 - 2012/10
N2 - The paper presents the results of a study on the formation and evolution of short-lived radiation-induced defects in wide band-gap optical materials with the mobile cations. The spectra and decay kinetics of transient optical absorption (TOA) of radiation defects in crystals of potassium and ammonium dihydro phosphates (KH 2PO 4 and NH 4H 2PO 4) were studied by means of the method of pulsed optical absorption spectroscopy with the nanosecond time resolution under excitation with an electron-beam (250 keV, 10 ns). A model of electron tunneling between the electron and hole centers under conditions of the thermally stimulated mobility of one of the recombination process partners was developed. The model describes all the features of the induced optical density relaxation kinetics observed in nonlinear optical crystals KH 2PO 4 and NH 4H 2PO 4 in a broad decay-time range of 10 ns-10 s after the pulse of radiation exposure. The paper discusses the origin of radiation defects that determine the TOA, as well as the dependence of the decay kinetics of the TOA on the temperature, excitation power and other experimental conditions.
AB - The paper presents the results of a study on the formation and evolution of short-lived radiation-induced defects in wide band-gap optical materials with the mobile cations. The spectra and decay kinetics of transient optical absorption (TOA) of radiation defects in crystals of potassium and ammonium dihydro phosphates (KH 2PO 4 and NH 4H 2PO 4) were studied by means of the method of pulsed optical absorption spectroscopy with the nanosecond time resolution under excitation with an electron-beam (250 keV, 10 ns). A model of electron tunneling between the electron and hole centers under conditions of the thermally stimulated mobility of one of the recombination process partners was developed. The model describes all the features of the induced optical density relaxation kinetics observed in nonlinear optical crystals KH 2PO 4 and NH 4H 2PO 4 in a broad decay-time range of 10 ns-10 s after the pulse of radiation exposure. The paper discusses the origin of radiation defects that determine the TOA, as well as the dependence of the decay kinetics of the TOA on the temperature, excitation power and other experimental conditions.
KW - Decay kinetics
KW - Luminescent materials
KW - Spectroscopy with time resolution
KW - Transient optical absorption
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UR - http://www.scopus.com/inward/citedby.url?scp=84865321155&partnerID=8YFLogxK
U2 - 10.1016/j.optmat.2012.03.010
DO - 10.1016/j.optmat.2012.03.010
M3 - Article
VL - 34
SP - 2030
EP - 2034
JO - Optical Materials
JF - Optical Materials
SN - 0925-3467
IS - 12
ER -