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It is demonstrated that RF current modulation of a frequency stabilizedinjection-locked diode laser allows the stabilization of an optical cavity toadjustable lengths, by variation of the RF frequency. This transfer cavity maybe used to stabilize another laser at an arbitrary wavelength, in the absenceof atomic or molecular transitions suitable for stabilization. Implementationinvolves equipment and techniques commonly used in laser cooling and trappinglaboratories, and does not require electro- or acousto-optic modulators. Withthis technique we stabilize a transfer cavity using a RF current-modulateddiode laser which is injection locked to a 780 nm reference diode laser. Thereference laser is stabilized using polarization spectroscopy in a Rb cell. ATi:sapphire ring laser at 960 nm is locked to this transfer cavity and may beprecisely scanned by varying the RF modulation frequency. We demonstrate thesuitability of this system for the excitation of laser cooled Rb atoms toRydberg states

Optical transfer cavity stabilization using current-modulated injection-locked diode lasers