A simple, versatile laser system for the creation of ultracold ground state molecules

被引：32

作者：

Gregory, P. D. ^{[1
]}

Molony, P. K. ^{[1
]}

Koeppinger, M. P. ^{[1
]}

Kumar, A. ^{[1
]}

Ji, Z. ^{[1
]}

Lu, B. ^{[1
]}

Marchant, A. L. ^{[1
]}

Cornish, S. L. ^{[1
]}

机构：

[1] Univ Durham, Dept Phys, Joint Quantum Ctr JQC Durham Newcastle, Durham DH1 3LE, England

来源：

NEW JOURNAL OF PHYSICS | 2015年 / 17卷

基金：

英国工程与自然科学研究理事会;

关键词：

molecules; STIRAP; magnetoassociation; narrow linewidth laser; molecular spectroscopy; RbCs; SPECTROSCOPY; RESONANCES;

D O I：

10.1088/1367-2630/17/5/055006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Anarrow-linewidth, dual-wavelength laser system is vital for the creation of ultracold ground state molecules via stimulated Raman adiabatic passage (STIRAP) from a weakly bound Feshbach state. Here we describe how a relatively simple apparatus consisting of a single fixed-length optical cavity can be used to narrow the linewidth of the two different wavelength lasers required for STIRAP simultaneously. The frequency of each of these lasers is referenced to the cavity and is continuously tunable away from the cavity modes through the use of non-resonant electro-optic modulators. Self-heterodyne measurements suggest the laser linewidths are reduced to several 100 Hz. In the context of Rb-87(133) Cs molecules produced via magnetoassociation on a Feshbach resonance, we demonstrate the performance of the laser system through one-and two-photon molecular spectroscopy. Finally, we demonstrate transfer of the molecules to the rovibrational ground state using STIRAP.

引用

页数：13

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