Proceedings ArticleDOI
Study of nonlinear absorption properties of reduced graphene oxide by Z-scan technique
V. G. Sreeja,G. Vinitha,R. Reshmi,E.I. Anila,M. K. Jayaraj +4 more
- Vol. 1832, Iss: 1, pp 140010
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TLDR
In this article, the structural and nonlinear absorption properties of reduced graphene oxide (rGO) synthesized by Modified Hummer's method were explored with the help of Fourier transform infrared spectroscopy (FTIR) and Raman spectrograms (Raman) using a continuous wave (CW) laser.Abstract:
Graphene has generated enormous research interest during the last decade due to its significant unique properties and wide applications in the field of optoelectronics and photonics This research studied the structural and nonlinear absorption properties of reduced graphene oxide (rGO) synthesized by Modified Hummer’s method Structural and physiochemical properties of the rGO were explored with the help of Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy (Raman) Nonlinear absorption property in rGO, was investigated by open aperture Z-scan technique by using a continuous wave (CW) laser The Z-scan results demonstrate saturable absorption property of rGO with a nonlinear absorption coefficient, β, of −262 × 10−4 cm/W, making it suitable for applications in Q switching, generation of ultra-fast high energy pulses in laser cavity and mode lockersread more
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Journal ArticleDOI
Preparation and photocatalytic N2/H2O to ammonia performance of cadmium sulfide/carbon nanoscrolls
TL;DR: In this paper, coal-based carbon nanoscrolls (CNS) were prepared through improved Hummers oxidation method using Xinjiang Wucaiwan coal as a carbon source, after removing impurities by acid treatment and graphitizing pretreatment.
Journal ArticleDOI
Enhanced nonlinear optical absorption in defect enriched graphene oxide and reduced graphene oxide using continuous wave laser z-scan technique
K. Kumara,Veena Shivadas Kindalkar,Felcy Jyothi Serrao,T. Chandra Shekhara Shetty,Parutagouda Shankaragouda Patil,S. M. Dharmaprakash +5 more
TL;DR: In this article , the authors investigated the nonlinear optical properties of defect enriched graphene oxide and reduced graphene oxide (rGO) by performing a single beam z-scan experiment using a continuous-wave (CW) laser at 532 nm.
Journal ArticleDOI
Third order nonlinear optical properties and electrochemical performance of La2CoMnO6 double perovskite
Amal Hisham E. Shereef,P. Aleena,Jibi Kunjumon,Ayona K. Jose,Susmi Anna Thomas,M. Rajive Tomy,T.S. Xavier,S. Hussian,D. Sajan +8 more
TL;DR: In this paper , a double perovskite was synthesized via modified combustion route, and its structure was verified using XRD with Rietveld refinement with space group of P21/n.
References
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PatentDOI
Graphene-based materials
TL;DR: In this paper, a three-dimensional network of interconnected and ordered open cells, the open cells being defined by cell walls, the cell walls being formed of graphene sheets, partially reduced graphene oxide sheets, or a combination thereof.
Journal ArticleDOI
Nonlinear optical properties of graphene oxide in nanosecond and picosecond regimes
TL;DR: In this paper, the nonlinear optical properties of graphene oxide (GO) were investigated at 532 nm in nanosecond and picosecond regimes, and it was shown that two-photon absorption dominates nonlinear absorption process of GO in the case of 2D pulses.
Journal ArticleDOI
Characterization of nonlinear optical absorption and refraction
TL;DR: In this article, the authors discuss the characterization of nonlinear optical processes that give rise to changes in the absorption coefficient and refractive index of condensed matter and the responsible physical mechanisms.
Journal ArticleDOI
Effect of Reaction Temperature on Structural and Optical Properties of Reduced Graphene Oxide
TL;DR: In this paper, aqueous solutions of graphite oxide (GO) were reduced at two different temperatures (80 and 95° C) using hydrazine hydrate, and a correlation between structural and optical properties of reduced graphene oxide powder samples with temperature was established.
Optimizing and Applying Graphene as a Saturable Absorber for Generating Ultrashort Pulses
TL;DR: In this paper, hole-doping graphene chemically to various Fermi levels was demonstrated to modify the modulation depth and insertion loss of a monolayer graphene absorber for active suppression of Q-switching.