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20162020
most citedMassively parallel ultrafast random bit generation with a chip-scale laser

118 citations

Showing physics.opticsShow all

9 papers · 1 filter

physics.optics2020★ 118 cited

Massively parallel ultrafast random bit generation with a chip-scale laser

Kyungduk Kim, Stefan Bittner, Yongquan Zeng +4

Random numbers are widely used for information security, cryptography, stochastic modeling, and quantum simulations. Key technical challenges for physical random number generation…

physics.optics2020★ 28 cited

Non-invasive optical focusing inside strongly scattering media with linear fluorescence

Dayan Li, Sujit Kumar Sahoo, Huy Quoc Lam +2

Non-invasive optical focusing inside scattering media is still a big challenge because inhomogeneous media scatter both incoming photons for focusing and outgoing photons for obser…

physics.optics2019★ 26 cited

Spatial structure of lasing modes in wave-chaotic semiconductor microcavities

Stefan Bittner, Kyungduk Kim, Yongquan Zeng +2

We present experimental and numerical studies of broad-area semiconductor lasers with chaotic ray dynamics. The emission intensity distributions at the cavity boundaries are measur…

physics.optics2019★ 19 cited

Multimode Lasing in Wave-Chaotic Semiconductor Microlasers

Alexander Cerjan, Stefan Bittner, Marius Constantin +5

We investigate experimentally and theoretically the lasing behavior of dielectric microcavity lasers with chaotic ray dynamics. Experiments show multimode lasing for both D-shaped…

physics.optics2019★ 106 cited

Noninvasive super-resolution imaging through scattering media

Dong Wang, Sujit Kumar Sahoo, Cuong Dang

Super-resolution imaging with advanced optical systems has been revolutionizing technical analysis in various fields from biological to physical sciences. However, many objects are…

physics.optics2019★ 35 cited

Electrically pumped semiconductor laser with low spatial coherence and directional emission

Kyungduk Kim, Stefan Bittner, Yongquan Zeng +3

We design and fabricate an on-chip laser source that produces a directional beam with low spatial coherence. The lasing modes are based on the axial orbit in a stable cavity and ha…

physics.optics2018★ 113 cited

Suppressing spatio-temporal lasing instabilities with wave-chaotic microcavities

Stefan Bittner, Stefano Guazzotti, Yongquan Zeng +7

Spatio-temporal instabilities are widespread phenomena resulting from complexity and nonlinearity. In broad-area edge-emitting semiconductor lasers, the nonlinear interactions of m…

physics.optics2017★ 73 cited

Single shot large field of view imaging with scattering media by spatial demultiplexing

Sujit Kumar Sahoo, Dongliang Tang, Cuong Dang

Optically focusing and imaging through strongly scattering media are challenging tasks but have widespread applications from scientific research to biomedical applications and dail…

physics.optics2017★ 23 cited

Enhancing security of optical cryptosystem with position-multiplexing and ultra-broadband illumination

Dongliang Tang, Sujit Kumar Sahoo, Cuong Dang

A position-multiplexing based cryptosystem is proposed to enhance the information security with an ultra-broadband illumination. The simplified optical encryption system only conta…