Frequency locking of a 399-nm laser referenced to fluorescence spectrum of an ytterbium atomic beam
| Autor: | Yun Long, Baolong Lv, Lingxiang He, Meng-Jiao Zhang, Zhuan-Xian Xiong, Xi Zhang |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Ytterbium
Materials science Isotope business.industry Spectrum (functional analysis) chemistry.chemical_element Laser Fluorescence Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Optics chemistry law Laser cooling Physics::Atomic Physics Electrical and Electronic Engineering Quantum information business Diode |
| Zdroj: | Chinese Optics Letters. 12:021401-21404 |
| ISSN: | 1671-7694 |
| DOI: | 10.3788/col201412.021401 |
| Popis: | The laser cooling of ytterbium (Yb) atoms needs a 399-nm laser which operates on the strong S-1(0)-P-1(1) transition and can be locked at the desired frequencies for different Yb isotopes. We demonstrate a frequency locking method using the fluorescence spectrum of an Yb atomic beam as a frequency reference. For unresolved fluorescence peaks, we make the spectrum of the even isotopes vanish by using the strong angular-dependence of the fluorescence radiations; the remained closely-spaced peaks are thus clearly resolved and able to serve as accurate frequency references. A computer-controlled servo system is used to lock the laser frequency to a single fluorescence peak of interest, and a frequency stability of 304 kHz is achieved. This frequency-locked laser enables us to realize stable blue magneto-optic-traps (MOT) for all abundant Yb isotopes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|