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Updated: May 7, 2026

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

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Published on: February 25, 2017

Nanocavity-based self-frequency conversion laser.

Yasutomo Ota, Katsuyuki Watanabe, Satoshi Iwamoto

|October 10, 2013

Summary

This summary is machine-generated.

Researchers achieved self-frequency conversion (SFC) in nanocavity quantum dot lasers, enabling efficient visible light generation. This breakthrough allows for compact, full-color laser integration on a single chip, even at few-photon levels.

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Published on: November 22, 2019

Area of Science:

Optics and Photonics
Quantum Electronics
Materials Science

Background:

Self-frequency conversion (SFC) extends laser operational wavelengths by combining laser oscillation and nonlinear frequency conversion within a single crystal.
Enhanced nonlinear optical processes are achieved by minimizing cavity mode volume (V) and maximizing quality factor (Q), scaling with (Q/V)^n.

Purpose of the Study:

To demonstrate nanocavity-based SFC for efficient visible light generation.
To leverage high Q-factor and small mode volume in photonic crystal nanocavities for enhanced nonlinear optics.
To develop a platform for monolithic integration of multi-color nanolasers.

Main Methods:

Utilized photonic crystal nanocavity quantum dot lasers for self-frequency conversion.
Engineered semiconductor-based nanocavities with high Q and small V.
Integrated broadband quantum dot gain with nanocavity designs.

Main Results:

Achieved efficient SFC for visible light generation using few photons in the laser cavity.
Demonstrated monolithic integration of 26 different-color nanolasers (493-627 nm) in a micro-scale area.
Showcased the potential for few-photon nonlinear optics studies.

Conclusions:

Nanocavity-based SFC offers a highly efficient pathway for visible light generation.
This technology enables the creation of compact, full-color lasers on a single semiconductor chip.
The developed nanolasers serve as a novel platform for exploring few-photon nonlinear phenomena.