18 citations · 18 across the 1 of their papers we have counts for
6 papers
Single-mode lasing based on PT-breaking of two-dimensional photonic higher-order topological insulator
B. F. Zhu, Q. Wang, Y. Q. Zeng +2
Topological lasers are a new class of lasers that seek to exploit the special properties of topological states of light. A typical limiting factor in their performance is the exist…
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…
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…
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…
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…
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…