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20142026
most citedAn electronic-based model of the optical nonlinearity of low-electron-density-Drude materials

41 citations · 178 across the 16 of their papers we have counts for

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physics.optics2026

Origin, strength, and speed of the nonlinear optical response of transparent conducting oxides to single-cycle optical pulses

Ieng-Wai Un, Subhajit Sarkar, Yonatan Sivan

We present a first-principles study of the nonlinear optical response of transparent conducting oxides at the nanoscale due to excitation by intense, extremely short pulses based o…

physics.optics2026

Quantum-optical theory of the few femtosecond nonlinear optical response of Drude metals with a non-parabolic conduction band

Ieng-Wai Un, Subhajit Sarkar, Yonatan Sivan

We develop an energy-space density matrix framework to investigate the interaction of extremely short optical pulses (ESPs) with transparent conducting oxides (TCOs). This approach…

physics.optics2022★ 41 cited

An electronic-based model of the optical nonlinearity of low-electron-density-Drude materials

Ieng Wai Un, Subhajit Sarkar, Yonatan Sivan

Low electron density Drude (LEDD) materials such as indium tin oxide (ITO) are receiving considerable attention because of their combination of CMOS compatibility, unique epsilon-n…

physics.optics2022★ 24 cited

The electronic and thermal response of low electron density Drude materials to ultrafast optical illumination

Subhajit Sarkar, Ieng Wai Un, Yonatan Sivan

Many low electron density Drude (LEDD) materials such as transparent conductive oxide or nitrides have recently attracted interest as alternative plasmonic materials and future non…

physics.optics2021★ 14 cited

Theory of Non-equilibrium "Hot" Carriers in Direct Band-gap Semiconductors Under Continuous Illumination

Subhajit Sarkar, Ieng-Wai Un, Yonatan Sivan +1

The interplay between the illuminated excitation of carriers and subsequent thermalization and recombination leads to the formation of non-equilibrium distributions for the "hot" c…