Abstract
We developed a frequency-stabilized diode laser using magnetically induced circular dichroism. From a spectroscopic study of the Rb-D2 line, the most stable Doppler-broadened and Doppler-free lines were found to be the transitions from the Fg=2 ground state of 85Rb and the crossover resonance from the Fg=3 ground state to the Fe=3 and 4 excited states of 85Rb, respectively. Furthermore, we measured the fluctuation of a laser locked to the Doppler-free line to be ±50 kHz/8 h and thus revealed the applicability to a long-term frequency stabilization. The laser developed can be used as a reference laser in a frequency stabilization system for multiple tunable lasers for resonance ionization mass spectrometry (RIMS) analysis.
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