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Updated: Jul 9, 2026
11:21
Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Laser cooling of a solid by 65K starting from room temperature
Optics Letters
|December 13, 2007
Summary
Solid-state laser cooling in a vacuum was achieved, reducing a Yb(3+)-doped fiber
Area of Science:
- Laser cooling
- Solid-state physics
- Materials science
Background:
- Laser cooling typically applies to gases, not solids.
- Achieving sub-ambient temperatures in solids is challenging.
- Optical cooling mechanisms are crucial for advanced applications.
Purpose of the Study:
- Demonstrate laser cooling of a solid material.
- Investigate ytterbium-doped ZBLANP glass fiber for cooling.
- Quantify the cooling efficiency and thermal equilibration.
Main Methods:
- In vacuo laser cooling experiment.
- Utilized a Yb(3+)-doped fluorozirconate glass fiber.
- Optical pumping at 1015 nm to induce anti-Stokes fluorescence.
Main Results:
- Reduced solid temperature from 301 K to 236 K.
- Achieved cooling via anti-Stokes fluorescence of Yb(3+).
- Experimental cooling matched theoretical predictions.
Conclusions:
- In vacuo laser cooling of solids is feasible.
- Yb(3+)-doped ZBLANP fiber is a viable material for optical cooling.
- Demonstrated a significant temperature reduction in a solid-state system.
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