Trap-loss spectroscopy of Rydberg states in ytterbium
Claudia C. Halter, A Miethke, Christian Sillus, Apoorva Hegde, Axel Görlitz
Abstract
Abstract We present an experimental study of the Rydberg <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msup> <mml:mi> </mml:mi> <mml:mn>1</mml:mn> </mml:msup> <mml:msub> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msub> </mml:math> - and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msup> <mml:mi> </mml:mi> <mml:mn>1</mml:mn> </mml:msup> <mml:msub> <mml:mi>P</mml:mi> <mml:mn>1</mml:mn> </mml:msub> </mml:math> - series of ytterbium for principal quantum numbers in the range of n = 70–90. The study is performed using trap loss spectroscopy in a magneto-optical trap operating on the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msup> <mml:mn>6</mml:mn> <mml:mn>1</mml:mn> </mml:msup> <mml:msub> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msub> <mml:mo stretchy="false">→</mml:mo> <mml:msup> <mml:mn>6</mml:mn> <mml:mn>1</mml:mn> </mml:msup> <mml:msub> <mml:mi>P</mml:mi> <mml:mn>1</mml:mn> </mml:msub> </mml:math> transition at 399 nm. Compared to the commonly used Rydberg spectroscopy method using field-ionization and ion detection, trap loss spectroscopy is significantly simpler and requires a less sophisticated experimental setup. Using this method we determine relative values of the scalar and tensor electric polarizabilities of both, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mn>6</mml:mn> <mml:mi>s</mml:mi> <mml:mi>n</mml:mi> <mml:msup> <mml:mi>s</mml:mi> <mml:mn>1</mml:mn> </mml:msup> <mml:msub> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msub> </mml:math> - and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mn>6</mml:mn> <mml:mi>s</mml:mi> <mml:mi>n</mml:mi> <mml:msup> <mml:mi>p</mml:mi> <mml:mn>1</mml:mn> </mml:msup> <mml:msub> <mml:mi>P</mml:mi> <mml:mn>1</mml:mn> </mml:msub> </mml:math> - Rydberg states.