Analyte-induced spectral filtering in femtosecond transient absorption spectroscopy
- Univ. of Delaware, Newark, DE (United States). Dept. of Chemistry and Biochemistry; University of Delaware
- Univ. of Delaware, Newark, DE (United States). Dept. of Physics and Astronomy
- Univ. of Delaware, Newark, DE (United States). Dept. of Chemistry and Biochemistry and Dept. of Physics and Astronomy
Here, we discuss the influence of spectral filtering by samples in femtosecond transient absorption measurements. Commercial instruments for transient absorption spectroscopy (TA) have become increasingly available to scientists in recent years and TA is becoming an established technique to measure the dynamics of photoexcited systems. Furthermore, we show that absorption of the excitation pulse by the sample can severely alter the spectrum and consequently the temporal pulse shape. This “spectral self-filtering” effect can lead to systematic errors and misinterpretation of data, most notably in concentration dependent measurements. Finally, the combination of narrow absorption peaks in the sample with ultrafast broadband excitation pulses is especially prone to this effect.
- Research Organization:
- Univ. of Delaware, Newark, DE (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0016288
- OSTI ID:
- 1345803
- Journal Information:
- Journal of Luminescence, Journal Name: Journal of Luminescence Journal Issue: C Vol. 187; ISSN 0022-2313
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Carrier-Specific Femtosecond XUV Transient Absorption of PbI2 Reveals Ultrafast Nonradiative Recombination
Ultrafast photo-induced nuclear relaxation of a conformationally disordered conjugated polymer probed with transient absorption and femtosecond stimulated Raman spectroscopies