Investigation Of Nonlinear Optical Properties Of Exfoliated Mos2 Using Photoacoustic Zscan
Keywords
absorption; acoustic; optical
Abstract
We studied nonlinear absorption characteristics of exfoliated Molybdenum disulphide (MoS2) dispersion in 1-Methyl-2-pyrrolidinone and demonstrate a dual absorption characteristic at 532nm nanosecond pulsed laser wavelength. A number of recent reports demonstrate a saturable absorption in MoS2 and other 2D materials at low fluences and a deviation from this saturable absorption at higher fluence using open aperture Z scan (OZ scan) technique. It has been suggested that this deviation at higher fluences is due to nonlinear optical scattering. We have recently developed a new technique which combines OZ scan and photoacoustic Z-scan (PAZ-scan). It can measure photoacoustic and optical transmission signals simultaneously. The data obtained from both signals are employed to find nonlinear absorption parameters in non-linear optical materials. Our results reveal that non-linear scattering is not the cause of deviation of 2D materials from saturable absorption at higher fluences. We propose that the optical limiting behavior at higher fluence in these 2D materials is dominated by free carrier absorption.
Publication Date
1-1-2016
Publication Title
MRS Advances
Volume
1
Issue
47
Number of Pages
3215-3221
Document Type
Article; Proceedings Paper
Personal Identifier
scopus
DOI Link
https://doi.org/10.1557/adv.2016.456
Copyright Status
Unknown
Socpus ID
85041563951 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/85041563951
STARS Citation
Dhasmana, Nitesh; Fadil, Dalal; Kaul, Anupama B.; and Thomas, Jayan, "Investigation Of Nonlinear Optical Properties Of Exfoliated Mos2 Using Photoacoustic Zscan" (2016). Scopus Export 2015-2019. 4386.
https://stars.library.ucf.edu/scopus2015/4386