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High-speed Particle Image Velocimetry Near Surfaces

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Published on: June 24, 2013

Ultrafast control of vortex microlasers.

Can Huang¹, Chen Zhang¹, Shumin Xiao^1,2

¹State Key Laboratory on Tunable Laser Technology, Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China.

Science (New York, N.Y.)

|February 29, 2020

Summary

This summary is machine-generated.

Researchers developed new perovskite vortex microlasers for ultrafast optical switching. These lasers enable rapid, low-energy switching between vortex and linearly polarized beams, advancing optical communication and computing technologies.

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Area of Science:

Photonics and Nanotechnology
Quantum Information Science

Background:

Integrated sources of structured light are crucial for quantum and classical information processing.
Existing vortex microlasers are static and have high lasing thresholds, limiting their use in high-speed applications.

Purpose of the Study:

To introduce perovskite-based vortex microlasers.
To demonstrate their application in ultrafast all-optical switching at room temperature.

Main Methods:

Utilized perovskite materials for microlaser fabrication.
Exploited mode symmetry and far-field properties for beam switching.
Investigated switching dynamics and energy consumption.

Main Results:

Achieved switchable lasing between vortex and linearly polarized beams.
Demonstrated ultrafast switching times of 1 to 1.5 picoseconds.
Observed energy consumption orders of magnitude lower than previous methods.

Conclusions:

Developed a novel perovskite vortex microlaser with switchable output.
Overcame the trade-off between low energy consumption and high-speed nanophotonics.
Introduced microlasers switchable at terahertz frequencies for advanced optical technologies.