A magneto-optical trap for chromium with population repumping via intercombination lines

被引：35

作者：

Bell, AS

Stuhler, J

Locher, S

Hensler, S

Mlynek, J

Pfau, T

机构：

[1] Univ Konstanz, Opt Zentrum Konstanz, D-78457 Constance, Germany

[2] Univ Konstanz, Fak Phys, D-78457 Constance, Germany

来源：

EUROPHYSICS LETTERS | 1999年 / 45卷 / 02期

关键词：

D O I：

10.1209/epl/i1999-00140-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the realisation of a magneto-optical trap for chromium. Cr-52 atoms are loaded directly;from a thermal beam. The trap lifetime is enhanced by using two red lasers to repump population that has decayed, via intercombination lines, to metastable levels back into the cooling cycle. We have measured the wavelengths of these intercombination lines and observed coherent Raman spectra. The observed density of similar to 10(8) cm(-3) is currently limited by collisions with the hot beam.

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页码：156 / 161

页数：6

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