Nonlinear optical and multiphoton processes for in situ manipulation and conversion of photons: applications to energy and healthcare (Conference Presentation)

2017 ◽  
Author(s):  
Paras N. Prasad
Keyword(s):  
Nonlinear Optical ◽  
Multiphoton Processes

scholarly journals In situ second-harmonic generation mediated photodynamic therapy by micelles co-encapsulating coordination nanoparticle and photosensitizer

RSC Advances ◽  
2017 ◽  
Vol 7 (82) ◽  
pp. 52125-52132 ◽  
Author(s):  
Xuyang Zhou ◽  
Yang Chen ◽  
Jian Su ◽  
Xiaohe Tian ◽  
Yonghuang Luo ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Property A

NIR-PDT strategy was introduced by employing a nonlinear optical conveyor bearing strong second-harmonic generation (SHG) property. A biocompatible micellic system co-delivered the conveyor and photosensitizer for in situ NIR-PDT.

scholarly journals In situ 3D characterization of historical coatings and wood using multimodal nonlinear optical microscopy

2012 ◽  
Vol 20 (22) ◽  
pp. 24623 ◽  
Author(s):  
Gaël Latour ◽  
Jean-Philippe Echard ◽  
Marie Didier ◽  
Marie-Claire Schanne-Klein
Keyword(s):  
Optical Microscopy ◽  
Nonlinear Optical ◽  
Nonlinear Optical Microscopy

Analysis of nonlinear optical phenomena: perspective of in-situ monitoring method of the semiconductor-film crystal-structure

1990 ◽  
Author(s):  
Valery V. Balaniuk ◽  
Victor F. Krasnov ◽  
Nikolai A. Kul'chitzkii ◽  
Semion L. Musher ◽  
Vasily I. Proc' ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Nonlinear Optical ◽  
In Situ Monitoring ◽  
Semiconductor Film ◽  
Monitoring Method ◽  
Optical Phenomena ◽  
Nonlinear Optical Phenomena

Nonlinear Optical Behavior of Transparent Nanohybrids of Nanocrystalline TiO2 in Poly(methyl methacrylate) Prepared by In Situ Sol-Gel Polymerization Technique

2005 ◽  
Vol 23 ◽  
pp. 367-370
Author(s):  
A.H. Yuwono ◽  
J.M. Xue ◽  
J. Wang ◽  
H.I. Elim ◽  
Wei Ji ◽  
...  
Keyword(s):  
Thin Films ◽  
Methyl Methacrylate ◽  
Nonlinear Optical ◽  
Sol Gel ◽  
Nanocrystalline Tio2 ◽  
Pump Probe ◽  
Poly Methyl Methacrylate ◽  
Ultrafast Relaxation ◽  
Quartz Substrates

Nanohybrid thin films consisting of nanocrystalline TiO2 particles in poly(methyl methacrylate)(PMMA) were successfully synthesized by in-situ sol-gel and polymerization assisted by spin coating. Using titanium isoproproxide (Ti-iP), methyl methacrylate (MMA) and 3-(trimethoxysily)propyl methacrylate (MSMA) as the starting materials, nanohybrids containing up to 60% Ti-iP in PMMA were realized. The resulting nanohybrid thin films coated on quartz substrates are optically transparent and demonstrate nonlinear optical behaviour, where their nonlinear absorption increases with the loading of Ti-iP in PMMA, as confirmed by Z-scan measurements. Using pump-probe technique, these thin films are shown to exhibit an ultrafast relaxation time of ~1.5 picosecond.

In Situ Kinetics of Layer-by-Layer Assembled Nonlinear-Optical-Active Amphiphiles from Dynamic Surface Force Measurements

Langmuir ◽  
2004 ◽  
Vol 20 (20) ◽  
pp. 8735-8739 ◽  
Author(s):  
Niña G. Caculitan ◽  
Paul H. Scudder ◽  
Analiz Rodriguez ◽  
Joanna L. Casson ◽  
Hsing-Lin Wang ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Surface Force ◽  
Layer By Layer ◽  
Force Measurements ◽  
Dynamic Surface ◽  
Kinetics Of

In Situ Measurement of the Second Harmonic Signal of Adsorbing Nonlinear Optical Ionically Self-Assembled Monolayers.

2001 ◽  
Vol 707 ◽  
Author(s):  
C. Brands ◽  
P.J. Neyman ◽  
M.T. Guzy ◽  
S. Shah ◽  
K.E Van Cott ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Salt Water ◽  
Harmonic Signal ◽  
Deionized Water ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Second Harmonic Signal

ABSTRACTIonically self-assembled monolayers (ISAMs) have recently been shown to spontaneously exhibit a polar ordering that gives rise to substantial second order nonlinear optical response. The deposition of ISAMs has been studied in situ via second harmonic generation. This is a particularly sensitive probe of the growth of nanometer-thick films since the centrosymmetry of the immersion solutions, the substrate, and the container yields no SHG contribution from these bulk components. Upon immersion in the NLO-active polyelectrolyte solution, the SHG rises sharply over the first minute. When a film is immersed into salt water, the SHG decreases significantly only to be restored when the salt solution is replaced with deionized water.

scholarly journals Tailoring the Nonlinear Optical Response of Some Graphene Derivatives by Ultraviolet (UV) Irradiation

Nanomaterials ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 152
Author(s):  
Aristeidis Stathis ◽  
Zoi Bouza ◽  
Ioannis Papadakis ◽  
Stelios Couris
Keyword(s):  
Uv Irradiation ◽  
Nonlinear Optical ◽  
Irradiation Time ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Simple Strategy ◽  
Custom Made ◽  
Graphene Derivatives ◽  
The Impact

In the present work the impact of in situ photoreduction, by means of ultraviolet (UV) irradiation, on the nonlinear optical response (NLO) of some graphene oxide (GO), fluorographene (GF), hydrogenated fluorographene (GFH) and graphene (G) dispersions is studied. In situ UV photoreduction allowed for the extended modification of the degree of functionalization (i.e., oxidization, fluorination and hydrogenation), leading to the effective tuning of the corresponding sp2/sp3 hybridization ratios. The nonlinear optical properties of the studied samples prior to and after UV irradiation were determined by means of the Z-scan technique using visible (532 nm), 4 ns laser excitation, and were found to change significantly. More specifically, while GO’s nonlinear optical response increases with irradiation time, GF and GFH present a monotonic decrease. The graphene dispersions’ nonlinear optical response remains unaffected after prolonged UV irradiation for more than an hour. The present findings demonstrate that UV photoreduction can be an effective and simple strategy for tuning the nonlinear optical response of these graphene derivatives in a controllable way, resulting in derivatives with custom-made responses, thus more suitable for different photonic and optoelectronic applications.

In Situ Synthesis of Graphene with Telecommunication Lasers for Nonlinear Optical Devices

2015 ◽  
Vol 3 (9) ◽  
pp. 1264-1272 ◽  
Author(s):  
Pulak C. Debnath ◽  
Jaehyun Park ◽  
Austin M. Scott ◽  
Junsu Lee ◽  
Ju Han Lee ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Devices ◽  
In Situ Synthesis ◽  
Nonlinear Optical Devices
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