Title:	Hematane Nanoflakes: A Non-van der Waals Material with Superior Nonlinear Optical Properties
Authors:	Prasannakumar, Anandhu Thejas Beryl, C Rohith, R Felscia U, Reeta Philip, Reji Varma, Sreekanth J
Keywords:	Non-van der Waals material hematene reverse saturable absorption o ptical limiting Z-scan
Issue Date:	Mar-2023
Publisher:	ACS Applied Optical Materials
Citation:	ACS Applied Optical Materials, 2023, Vol.1, p660-668
Abstract:	Stable and efficient optical limiters for eye and sensor protection have been in great demand ever since the advent of high-power lasers. In this study, we report the preparation of highly stable hematene nanoflakes for optical limiting applications by a facile exfoliation method from a low-cost, non-van der Waals material. Optical and structural characterization has been carried out to confirm the structure, morphology, and composition of the hematene nanoflakes. Open aperture Z-scan measurements have been carried out in near-transparent samples (87% linear transmission at the excitation wavelength of 532 nm), using 5 ns laser pulses. Despite the high transparency of the sample, a high nonlinear absorption coefficient of up to 13.0 ± 1.1 cm GW–1 has been determined, signifying the potential of this material for fabricating highly efficient optical power limiting devices.
Description:	Restricted Access. An open-access version is available at chemrxiv.org (one of the alternative locations)
URI:	http://hdl.handle.net/2289/8468
ISSN:	2771-9855
Alternative Location:	https://chemrxiv.org/engage/chemrxiv/article-details/62f26fa2d62bc02fd63fb3de http://dx.doi.org/10.1021/acsaom.2c00071
Copyright:	2022 American Chemical Society
Appears in Collections:	Research Papers (LAMP)

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