White Light Optical Waveguide Detection of Transient Absorption Spectra in Ultrathin Organic Films upon Pulsed Laser Excitation

2001 ◽  
Vol 30 (12) ◽  
pp. 1300-1301 ◽  
Author(s):  
Hideki Kawai ◽  
Kazuhiro Nakano ◽  
Toshihiko Nagamura
Keyword(s):  
Absorption Spectra ◽  
Optical Waveguide ◽  
White Light ◽  
Transient Absorption ◽  
Laser Excitation ◽  
Pulsed Laser ◽  
Organic Films ◽  
Transient Absorption Spectra

Photoinduced infrared absorption spectra of CuCl quantum dots in NaCl

2001 ◽  
Vol 15 (28n30) ◽  
pp. 4005-4008
Author(s):  
K. Yamanaka ◽  
K. Edamatsu ◽  
T. Itoh
Keyword(s):  
Absorption Spectra ◽  
Transient Absorption ◽  
Laser Excitation ◽  
Excited State Absorption ◽  
Hole Burning ◽  
Ir Absorption ◽  
Uv Laser ◽  
Defect Center ◽  
Transient Absorption Spectra ◽  
Peak Energy

We have studied infrared transient absorption spectra of CuCl QDs grown inside a NaCl matrix under tunable UV laser excitation on resonance with the confined excitons. In addition to the transient excited-state absorption, there appears induced IR absorption with lifetime much longer than that of the confined exciton. The peak energy remains at ~0.3 eV regardless of the QD size. The optical density is proportional to the square root of the UV laser power. The decay of the induced absorption is logarithmic on time and is accelerated by the irradiation of light below the band gap. We assign this absorption to be originated from the electron-bound defect center called I e center generated in the NaCl side of the interface and discuss it phenomenon in relation with photo-irradiation effects, such as photofatigue, blinking of the luminescence and hole burning.

Kinetic-Model-Free Analysis of Transient Absorption Spectra Enabled by 2D Correlation Analysis

2021 ◽  
pp. 4148-4153
Author(s):  
Julian Hniopek ◽  
Carolin Müller ◽  
Thomas Bocklitz ◽  
Michael Schmitt ◽  
Benjamin Dietzek ◽  
...  
Keyword(s):  
Kinetic Model ◽  
Correlation Analysis ◽  
Absorption Spectra ◽  
Transient Absorption ◽  
Transient Absorption Spectra ◽  
Model Free ◽  
2D Correlation Analysis

Graphical analysis of transient absorption spectra using the phasor approach

2015 ◽  
Vol 32 (8) ◽  
pp. 1693
Author(s):  
Hong Liu ◽  
Yulei Bai ◽  
Yun Zhang ◽  
Shuangli Ye ◽  
Weichao Xu ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
Transient Absorption ◽  
Graphical Analysis ◽  
Transient Absorption Spectra
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