An Optically Narrowed Diode Laser for Rb Saturation Spectroscopy |
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| Authors: | GP Barwood P Gill WRC Rowley |
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| Affiliation: | Division of Mechanical and Optical Metrology , National Physical Laboratory , Teddington, Middlesex, TW11 0LW, England |
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| Abstract: | Abstract Diode laser linewidths have been reduced by a factor of up to 20 000 using the technique of resonant optical feedback. In this method, the laser frequency also locks optically to a confocal cavity, greatly improving the passive frequency stability. For the first time, such an optically narrowed diode laser has been used to obtain high-resolution Doppler-free spectra of the D2 line of 85Rb and 87Rb at 780 nm. |
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