34 citations · 41 across the 4 of their papers we have counts for
4 papers
Upconversion of infrared light by graphitic micro-particles due to photo-induced structural modification
Rohin Sharma, Nishma Bhattarai, Rijan Maharjan +3
Recent reports of upconversion and white light emission from graphitic particles warrant an explanation of the physics behind the process. We offer a model, wherein the upconversio…
Compact spectrometer based on disordered multi-mode interferometer
Ankit Poudel, Pravin Bhattarai, Rijan Maharjan +3
We demonstrate a compact (40 m 260 m) spectrometer based on multimode interference aided by scattering of light from random SiO-filled hole arrays on a silicon-o…
Determining size of an optically trapped particle via modulated Raman spectroscopy
Rohin Sharma, Anusa Thapa, Rijan Maharjan +1
The average Raman signal power obtained in a modulated optical trap is dependent on the Brownian motion - therefore hydrodynamic properties of the trapped particle. Hence, in addit…
Single mode waveguide platform for spontaneous and surface-enhanced on-chip Raman spectroscopy
Ashim Dhakal, Frédéric Peyskens, Stéphane Clemmen +5
We review an on-chip approach for spontaneous Raman spectroscopy and Surface Enhanced Raman Spectroscopy (SERS) based on evanescent excitation of the analyte as well as evanescent…