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Updated: Mar 17, 2026

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

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

Published on: January 28, 2019

Phase-modulating lasers toward on-chip integration.

Yoshitaka Kurosaka¹, Kazuyoshi Hirose¹, Takahiro Sugiyama¹

¹Central Research Laboratory, Hamamatsu Photonics K.K., Shizuoka 434-8601, Japan.

Scientific Reports

|July 27, 2016

Summary

This summary is machine-generated.

Researchers developed novel phase-modulating lasers capable of generating configurable laser-beam patterns without external optical elements. This breakthrough enables on-chip integration for advanced laser applications.

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Last Updated: Mar 17, 2026

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Area of Science:

Optics and Photonics
Semiconductor Lasers
Nanotechnology

Background:

Precise control of laser-beam patterns is crucial for modern technologies.
Current methods rely on external optical elements (e.g., diffractive optical elements, spatial light modulators), hindering miniaturization and integration.
Existing approaches face challenges in on-chip integration and switchable control of individual laser modules.

Purpose of the Study:

To demonstrate phase-modulating lasers capable of emitting arbitrarily configurable beam patterns.
To enable lasing and phase modulation concurrently within a single semiconductor laser device.
To overcome limitations of conventional laser beam control methods for miniaturization and integration.

Main Methods:

Integration of a phase-modulating resonator directly into a semiconductor laser.
Fabrication of on-chip-sized laser devices.
Demonstration of switchable and configurable laser beam pattern generation.

Main Results:

Successfully operated phase-modulating semiconductor lasers.
Achieved concurrent lasing and phase modulation within the fabricated devices.
Demonstrated the capability to emit arbitrarily configurable beam patterns without external optical elements or scanning devices.

Conclusions:

The developed phase-modulating lasers offer a breakthrough for on-chip integration and switchable control.
This technology facilitates advanced laser applications, including switchable illumination for biomedical uses, structured illumination, and realistic 3D displays.
The findings pave the way for next-generation laser systems surpassing the capabilities of conventional device combinations.