A COMPACT GRATING-STABILIZED DIODE LASER SYSTEM, AND A DOPPLER-FREE LASER POLARIZATION SPECTROMETER FOR Rb
نویسنده
چکیده
We describe a compact, economic and versatile diode laser system based on commercial laser diode and a collimation tube, optically stabilized by means of feedback from a diffraction grating. Detailed instructions for the construction and operation of the diode laser system are presented. These instructions include machine drawings for the parts to be constructed. Our system offers single-mode operation with a linewidth of a few MHz, continuous scan over 4 GHz. Using the diode laser system we perform a sensitive method of Dopplerfree spectroscopy that we test on Rb and Rb vapor, monitoring the nonlinear interaction of two monochromatic laser beams in an absorbing gas via changes in light polarization. The signal-to-background ratio can greatly surpass that of saturated absorption. We show that this method provides us with a tool for evaluation of the spectral bandwidth of the grating-stabilized diode laser system.
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