In Situ Transient Absorption Spectroscopy During Organic Film Formation

2020 ◽  
Author(s):  
Cathy Wong
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Film Formation ◽  
Transient Absorption Spectroscopy ◽  
Organic Film

Single-shot transient absorption spectroscopy of an organic film

MRS Advances ◽  
2018 ◽  
Vol 3 (59) ◽  
pp. 3453-3457 ◽  
Author(s):  
Kelly S. Wilson ◽  
Madelyn N. Scott ◽  
Cathy Y. Wong
Keyword(s):  
Transient Absorption ◽  
Film Formation ◽  
Signal To Noise Ratio ◽  
Transient Absorption Spectroscopy ◽  
Organic Films ◽  
Single Shot ◽  
Organic Film ◽  
Pump Probe ◽  
Exciton Dynamics ◽  
Absorption Measurements

ABSTRACTWe report single-shot transient absorption (SSTA) measurements of an organic film of 3,3’-Diethyloxatricarbocyanine iodide (DOTCI). In SSTA, the pump-probe time delay is spatially encoded by using a tilted pump pulse. Translation of the sample during SSTA measurements averages over any spatial heterogeneity in the film. We demonstrate that exciton dynamics measured with the single-shot technique agrees with traditional transient absorption measurements of the same film. A signal-to-noise ratio of ∼40 is achieved in 10 s. The ability to measure exciton dynamics in organic films will enable future SSTA measurements of exciton dynamics during the molecular aggregation events that result in film formation.

scholarly journals In situ characterization of few-cycle laser pulses in transient absorption spectroscopy

2015 ◽  
Vol 40 (15) ◽  
pp. 3464 ◽  
Author(s):  
Alexander Blättermann ◽  
Christian Ott ◽  
Andreas Kaldun ◽  
Thomas Ding ◽  
Veit Stooß ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Laser Pulses ◽  
Transient Absorption Spectroscopy ◽  
In Situ Characterization
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