Optical properties of semiconductor microspheres fabricated via laser ablation in superfluid helium

Yosuke Minowa; Tomoki Nagao; Masaaki Ashida

doi:10.1117/12.2616171

27 October 2021 Optical properties of semiconductor microspheres fabricated via laser ablation in superfluid helium

Yosuke Minowa, Tomoki Nagao, Masaaki Ashida

Author Affiliations +

Proceedings Volume 11926, Optical Manipulation and Structured Materials Conference 2021; 1192614 (2021) https://doi.org/10.1117/12.2616171
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

We fabricated semiconductor zinc oxide microspheres via the pulsed laser ablation in the superfluid helium. The fabricated microspheres have a smooth surface and act as an optical microcavity showing whispering gallery mode resonances. We observed the inner structure of the microspheres after milling the part of the microspheres using focused ion beam. The observation of the milled surface reveals that some of the fabricated microspheres include voids. In particular, the larger microspheres tend to have voids inside themselves. Furthermore, we demonstrated that the microspheres with voids can have a high quality factor whispering gallery mode resonance if the void is positioned near the middle of the volume.

Citation Download Citation

Yosuke Minowa, Tomoki Nagao, and Masaaki Ashida "Optical properties of semiconductor microspheres fabricated via laser ablation in superfluid helium", Proc. SPIE 11926, Optical Manipulation and Structured Materials Conference 2021, 1192614 (27 October 2021); https://doi.org/10.1117/12.2616171

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE