Bloch-surface-wave photonic crystal nanobeam cavity

Area of Science:

• Photonics
• Nanotechnology
• Materials Science

Background:

• Photonic crystal nanobeam cavities offer flexible geometry and small footprints.
• Bloch surface waves (BSWs) are surface electromagnetic waves at periodic material interfaces.
• BSWs exhibit tunable dispersion relations, unlike other surface waves.

Purpose of the Study:

• To theoretically demonstrate a nanobeam cavity supporting localized Bloch surface waves (BSWs).
• To combine nanobeam cavity advantages with BSW tunability for a versatile platform.

Main Methods:

• Theoretical demonstration of a photonic crystal ridge nanobeam cavity.
• Analysis of localized Bloch surface waves propagation at the multilayer truncation interface.

Main Results:

• The proposed structure supports localized BSWs.
• The combination offers a customizable visible-to-IR platform.
• The platform is suitable for optical sensing and controlling nanoemitters.

Conclusions:

• The nanobeam cavity BSW platform provides a flexible and tunable solution for integrated photonics.
• Potential applications include advanced optical sensing and quantum information processing.