Laser cooling of a solid by 16 K starting from room temperature

被引：126

作者：

Mungan, CE ^{[1
]}

Buchwald, MI ^{[1
]}

Edwards, BC ^{[1
]}

Epstein, RI ^{[1
]}

Gosnell, TR ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.78.1030

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An Yb3+-doped optical fiber is laser cooled in vacuo from 298 to 282 K. Cooling results from anti-Stokes fluorescence of the ytterbium ions after optical pumping at a wavelength of 1015 nm. The sample temperature is deduced from the emission spectrum, which is sensitive to the populations in the excited-state multiplet of the ions. The temperature change is limited by the coupling between the fiber and ambient blackbody radiation, as confirmed when samples suddenly exposed to the pump laser are found to exponentially relax towards thermal steady state with the expected time constants.

引用

页码：1030 / 1033

页数：4

共 16 条

[1] OBSERVATION OF BOSE-EINSTEIN CONDENSATION IN A DILUTE ATOMIC VAPOR [J].