J 2024

Simulation of optomechanical interaction of levitated nanoparticle with photonic crystal micro cavity

MAŇKA, Tadeáš, Martin ŠILER, Vojtěch LIŠKA, Pavel ZEMÁNEK, Mojmír ŠERÝ et. al.

Basic information

Original name

Simulation of optomechanical interaction of levitated nanoparticle with photonic crystal micro cavity

Authors

MAŇKA, Tadeáš (guarantor), Martin ŠILER, Vojtěch LIŠKA (203 Czech Republic, belonging to the institution), Pavel ZEMÁNEK (203 Czech Republic), Mojmír ŠERÝ and Oto BRZOBOHATÝ (203 Czech Republic)

Edition

Optics Express, Optica Publishing Group, 2024, 1094-4087

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10306 Optics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.800 in 2022

Organization unit

Faculty of Science

UT WoS

001201953000004

Keywords in English

optical levitation of nanoparticles; optical trapping of micro-objects; laser cooling of levitating nanoparticles; cavity cooling

Tags

Tags

International impact, Reviewed
Změněno: 24/5/2024 08:37, Mgr. Marie Šípková, DiS.

Abstract

V originále

We propose and analyze theoretically a promising design of an optical trap for vacuum levitation of nanoparticles based on a one-dimensional (1D) silicon photonic crystal cavity (PhC). The considered cavity has a quadratically modulated width of the silicon wave guiding structure, leading to a calculated cavity quality factor of 8 × 105. An effective mode volume of approximately 0.16 μm3 having the optical field strongly confined outside the silicon structure enables optical confinement on nanoparticle in all three dimensions. The optical forces and particle-cavity optomechanical coupling are comprehensively analyzed for two sizes of silica nanoparticles (100 nm and 150 nm in diameter) and various mode detunings. The value of trapping stiffnesses in the microcavity is predicted to be 5 order of magnitudes higher than that reached for optimized optical tweezers, moreover the linear single photon coupling rate can reach MHz level which is 6 order magnitude larger than previously reported values for common bulk cavities. The theoretical results support optimistic prospects towards a compact chip for optical levitation in vacuum and cooling of translational mechanical degrees of motion for the silica nanoparticle of a diameter of 100 nm.