Two-color photoionization of calcium using SHG and LED light
作者： M. Hennrich , J. Eschner , C. Schuck , M. Almendros , F. Rohde
DOI: 10.1007/S00340-010-4086-7
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摘要: We present a photoionization method to load single 40Ca ions in linear Paul trap from an atomic beam. Neutral Ca I atoms are resonantly excited the ground state intermediate 4s4p 1P1-level using coherent 423 nm radiation produced by single-pass second harmonic generation periodically poled KTiOPO4 crystal pumped with 120 mW extended-cavity diode laser. Ionization is then attained high-power light emitting imaged center, appropriately designed optical system composed of standard achromatic doublet lenses. The setup simplifies previous implementations at similar efficiency, and it hardly requires any maintenance all.
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