28 citations · 96 across the 16 of their papers we have counts for
16 papers
Effusivity-Controlled Interfacial Thermal Transport Revealed by Nanoscale Optical Thermometry
Adarsh B Vasista, Anita Kumari, Yash P. Mhaske
Quantitative imaging of heat transport with high spatial and temporal resolution is essential for understanding thermal processes in heterogeneous systems, yet direct measurements…
Tailoring soft cavities for robust molecular strong coupling
Siddharaj M. Gadge, Adarsh B. Vasista
How should one design efficient chemically open optical cavities for molecular strong coupling? Addressing this question is important for the development of soft-cavity platforms f…
Non steady-state thermometry with optical diffraction tomography
Adarsh B Vasista, Bernard Ciraulo, Jaime Ortega Arroyo +1
Measurement of local temperature using label-free optical methods has gained importance as a pivotal tool in both fundamental and applied research. Yet, most of these approaches ar…
Molecular Strong Coupling and Cavity Finesse
Kishan S. Menghrajani, Adarsh B. Vasista, Wai Jue Tan +3
Molecular strong coupling offers exciting prospects in physics, chemistry and materials science. Whilst attention has been focused on developing realistic models for the molecular…
Strong Coupling of Multimolecular Species to Soft Microcavities
Adarsh B Vasista, William L Barnes
Can we couple multiple molecular species to soft-cavities? The answer to this question has relevance in designing open cavities for polaritonic chemistry applications. Due to the d…
Beaming Elastic and SERS Emission from Bent-Plasmonic Nanowire on a Mirror Cavity
Sunny Tiwari, Adarsh B. Vasista, Diptabrata Paul +2
We report on the experimental observation of beaming elastic and surface enhanced Raman scattering (SERS) emission from a bent-nanowire on a mirror (B-NWoM) cavity. The system was…
Effect of molecular absorption and vibrational modes in polariton assisted photoemission from a layered molecular material
Adarsh B Vasista, Kishan S Menghrajani, William L Barnes
The way molecules absorb, transfer, and emit light can be modified by coupling them to optical cavities. The extent of the modification is often defined by the cavity-molecule coup…
Mirror enhanced directional out-coupling of SERS by remote excitation of a nanowire-nanoparticle cavity
Sunny Tiwari, Adarsh B Vasista, Diptabrata Paul +1
We report on the experimental observation of mirror enhanced directional surface enhanced Raman scattering (SERS) from a self-assembled monolayer of molecules coupled to a nanowire…
Differential molecule-cavity mode coupling in soft-cavities
Adarsh B Vasista, William L Barnes
The way molecules absorb, transfer, and emit light can be dramatically modified by coupling them to optical cavities. The extent of the modification is often defined by the cavity-…
Momentum-resolved surface enhanced Raman scattering from a nanowire-nanoparticle junction cavity
Adarsh B. Vasista, Shailendra K. Chaubey, David J. Gosztola +3
Herein we report experimental evidence of directional SERS from molecules situated inside a single nanowire-nanoparticle junction cavity. The emission was confined to a narrow rang…
Observation of photonic spin-momentum locking due to coupling of achiral metamaterials and quantum dots
Ravindra Kumar Yadav, Wenxiao Liu, SRK Chaitanya Indukuri +4
Here, we report observations of photonic spin-momentum locking in the form of directional and chiral emission from achiral quantum dots (QDs) evanescently coupled to achiral hyperb…
Molecular monolayer strong coupling in dielectric soft microcavities
Adarsh B Vasista, William L Barnes
We report strong coupling of a monolayer of J-aggregated dye molecules to the whispering gallery modes of a dielectric microsphere at room temperature. We systematically studied th…
Dielectric microsphere coupled to a plasmonic nanowire: A self-assembled hybrid optical antenna
Sunny Tiwari, Chetna Taneja, Vandana Sharma +3
Hybrid mesoscale-structures that can combine dielectric optical resonances with plasmon-polaritons are of interest in chip-scale nano-optical communication and sensing. This experi…
Vectorial Fluorescence Emission from Microsphere Coupled to Gold Mirror
Adarsh B. Vasista, Sunny Tiwari, Deepak K. Sharma +2
We report on the generation, and momentum space distribution of fluorescence emission from individual SiO2 microsphere on dye coated Au mirror. The molecular fluorescence emission…
Fourier plane optical microscopy and spectroscopy
Adarsh B. Vasista, Deepak K. Sharma, G V Pavan Kumar
Intensity, wavevector, phase, and polarization are the most important parameters of any light beam. Understanding the wavevector distribution has emerged as a very important proble…
Doughnut shaped emission from vertical organic nanowire coupled to thin plasmonic film
Adarsh B. Vasista, Ravi P. N. Tripathi, Shailendra K. Chaubey +2
Vertical nanowires facilitate an innovative mechanism to channel the optical field in the orthogonal direction and act as a nanoscale light source. Subwavelength, vertically orient…