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Related Experiment Video

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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Published on: January 28, 2019

A monolithic white laser.

Fan Fan¹, Sunay Turkdogan¹, Zhicheng Liu¹

¹School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA.

Nature Nanotechnology

|July 28, 2015

Summary

This summary is machine-generated.

Researchers developed a novel semiconductor nanosheet laser that emits red, green, and blue light simultaneously. This breakthrough enables dynamic tuning across the full visible spectrum for advanced lighting and display applications.

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Area of Science:

Materials Science
Optoelectronics
Nanotechnology

Background:

Monolithic semiconductor lasers emitting across the visible spectrum are crucial for applications like solid-state lighting and full-color displays.
Achieving a monolithic white laser has been hindered by challenges in epitaxial growth of mismatched materials for different colors.

Purpose of the Study:

To demonstrate a monolithic multi-segment semiconductor nanosheet laser capable of simultaneous red, green, and blue (RGB) emission.
To overcome material growth challenges for creating full-spectrum visible lasers.

Main Methods:

Fabrication of a monolithic multi-segment semiconductor nanosheet using a quaternary ZnCdSSe alloy.
Development of a novel nanomaterial growth strategy for precise control over segment composition, morphology, and bandgaps.

Main Results:

Simultaneous lasing in red, green, and blue wavelengths from a single ZnCdSSe nanosheet device.
Dynamic tunability of the nanolaser across the entire visible spectrum.
Demonstration of a device covering 70% more perceptible colors than conventional illuminants.

Conclusions:

The developed ZnCdSSe nanosheet laser represents a significant advancement towards monolithic white lasers.
The novel growth strategy enables independent control of material properties for multi-color emission.
This technology has the potential to revolutionize full-color displays, lighting, and sensing applications.