Solid-state laser refrigeration of core-shell polystyrene microspheres

Rachel Gariepy; Xiaojing Xia; R. Greg Felsted; Ayelet Teitelbom; Emory Chan; Peter J. Pauzauskie

doi:10.1117/12.2635908

3 October 2022 Solid-state laser refrigeration of core-shell polystyrene microspheres

Rachel Gariepy, Xiaojing Xia, R. Greg Felsted, Ayelet Teitelbom, Emory Chan, Peter J. Pauzauskie

Proceedings Volume 12198, Optical Trapping and Optical Micromanipulation XIX; 121980A (2022) https://doi.org/10.1117/12.2635908
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

Microlaser designs based on the coupling of whispering gallery modes (WGMs) with the upconversion processes which take place within lanthanide-doped nanoparticles (UCNPs) have been demonstrated and shown to have many valuable qualities, such as high Q factors and low lasing thresholds. One obstacle that these microlaser designs still face is the challenges caused by photothermal heating of the gain medium, which could be solved through the design of a radiation balanced microlaser. In this work, WGM microresonators composed of 5 μm diameter polystyrene spheres are fabricated with a layer of Yb³⁺-doped NaYF₄ UCNPs in order to test if the anti-Stokes cooling properties of the UCNPs can cool the microresonator and its environment under laser irradiation. We find via calibrated mean fluorescence spectroscopy that the UCNPs can cool their local environment by as much as 23 °C and significantly reduce the heating of the aqueous environment surrounding the microresonator, showing promise for inclusion in a design for a radiation balanced microlaser.

Conference Presentation

Citation Download Citation

Rachel Gariepy, Xiaojing Xia, R. Greg Felsted, Ayelet Teitelbom, Emory Chan, and Peter J. Pauzauskie "Solid-state laser refrigeration of core-shell polystyrene microspheres", Proc. SPIE 12198, Optical Trapping and Optical Micromanipulation XIX, 121980A (3 October 2022); https://doi.org/10.1117/12.2635908

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

Includes PDF, HTML & Video, when available