27 citations · 42 across the 5 of their papers we have counts for
5 papers · 1 filter
Two-dimensional Keldysh theory for non-resonant strong-field ionization of monolayer 2D materials
Tsing-Hua Her, Che-Hao Chang, Kenan Darden +2
The Keldysh theory of photoionization for solids is generalized to atomically thin two-dimensional semiconductors. We derive a closed-form formula and its asymptotic forms for a tw…
Dielectric breakdown and sub-wavelength patterning of monolayer hexagonal boron nitride using femtosecond pulses
Sabeeh Irfan Ahmad, Emmanuel Sarpong, Arpit Dave +6
Hexagonal boron nitride (hBN) has emerged as a promising two-dimensional (2D) material for many applications in photonics. Although its linear and nonlinear optical properties have…
Bandwidth tunable optical filter based on a tri-mode high-contrast grating
Hsin-Yu Yao, Yi-Chen Wang, Tsun-Hsu Chang +1
We propose a monolithic optical bandpass filter with a transmission bandwidth tunable by the incident angle in a tri-mode high-contrast grating (HCG). We attribute this extraordina…
Ultrafast Multi-Shot Ablation and Defect Generation in Monolayer Transition Metal Dichalcogenides
Joel M. Solomon, Sabeeh Irfan Ahmad, Arpit Dave +5
Transition metal dichalcogenides are known to possess large optical nonlinearities and driving these materials at high intensities is desirable for many applications. Understanding…
Ultrafast Laser Ablation, Intrinsic Threshold, and Nanopatterning of Monolayer Molybdenum Disulfide
Joel M. Solomon, Sabeeh Irfan Ahmad, Arpit Dave +7
Laser direct writing is an attractive method for patterning 2D materials without contamination. Literature shows that the femtosecond ablation threshold of graphene across substrat…