Laser cooling of beryllium ions using a frequency-doubled 626 nm diode laser

被引：19

作者：

Cozijn, F. M. J. ^{[1
]}

Biesheuvel, J. ^{[1
]}

Flores, A. S. ^{[1
]}

Ubachs, W. ^{[1
]}

Blume, G. ^{[2
]}

Wicht, A. ^{[2
,3
]}

Paschke, K. ^{[2
]}

Erbert, G. ^{[2
]}

Koelemeij, J. C. J. ^{[1
]}

机构：

[1] Vrije Univ Amsterdam, LaserLaB, NL-1081 HV Amsterdam, Netherlands

[2] Ferdinand Braun Inst, D-12489 Berlin, Germany

[3] Humboldt Univ, Inst Phys, D-10117 Berlin, Germany

来源：

OPTICS LETTERS | 2013年 / 38卷 / 13期

关键词：

CONTINUOUS-WAVE;

D O I：

10.1364/OL.38.002370

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate laser cooling of trapped beryllium ions at 313 nm using a frequency-doubled extended cavity diode laser operated at 626 nm, obtained by cooling a ridge waveguide diode laser chip to -31 degrees C. Up to 32 mW of narrow-band 626 nm laser radiation is obtained. After passage through an optical isolator and beam shaping optics, 14 mW of 626 nm power remains of which 70% is coupled into an external enhancement cavity containing a nonlinear crystal for second-harmonic generation. We produce up to 35 mu W of 313 nm radiation, which is subsequently used to laser cool and detect 6 x 10(2) beryllium ions, stored in a linear Paul trap, to a temperature of about 10 mK, as evidenced by the formation of Coulomb crystals. Our setup offers a simple and affordable alternative for Doppler cooling, optical pumping, and detection to presently used laser systems. (C) 2013 Optical Society of America

引用

页码：2370 / 2372

页数：3

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