VCSEL

Bose-Einstein Condensation of Photons in VCSELs – New Operation Mode of Semiconductor Lasers

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B3 R5220

This talk presents findings on Bose-Einstein condensation of photons within a well-known semiconductor device - the VCSEL.

Nature Electronics: Chaotic VCSELs enable ultrafast photonic PUFs for dynamic authentication

1 min read ·
Real-time authentication is becoming increasingly important for cloud services, data centers, and large-scale IoT systems, where static key management can be difficult to scale and vulnerable to leakage or modeling attacks. In our new Nature Electronics paper, “Physical unclonable functions based on chaotic vertical-cavity surface-emitting lasers for dynamic authentication,” we demonstrate a photonic security system that uses chaotic vertical-cavity surface-emitting lasers as high-speed entropy sources for dynamic authentication. The core idea is to generate security keys directly from the

Geometry and Thermal Engineering of VCSELs for Enhanced Performance

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B2 R5209

This thesis presents a comprehensive approach to enhancing VCSEL performance through geometry engineering and passive thermal management to enable next-generation high-power and high-speed photonic systems, such as speckle-free imaging and ultrafast random number generation.

Cavity-Engineered VCSELs with Integrated Photodetectors for Optical Entropy and Security

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This thesis establishes cavity-engineered VCSELs with integrated photodetectors as a unified and scalable photonic platform for optical entropy generation and security.

Wenbo Yan

Wenbo Yan's research focuses on coherence engineering and laser dynamics in vertical-cavity surface-emitting lasers (VCSELs) to enable multifunctional photonic devices for speckle-free imaging and ultrafast random number generation.

Hang Lu