We have demonstrated an electronically tuned Ti: sapphire laser, the wavelength of which was controlled by an acousto-optic tunable filter (AOTF). The features of the electronically tuned laser are a broad tuning range from 700 to 1000nm and a rapid and random-access tuning capability in addition to full computer-controlled oscillating wavelength and the emitting power. Furthermore the electronically tuned laser can simultaneously oscillate two wavelengths in its single cavity by feeding two independent radio frequencies (RFs) into the AOTF. Thus, this laser has high wavelength controllability. RF powers fed into the AOTF should be controlled to optimize the laser output power depending on the wavelength. Therefore, the wavelength drift generated by a temperature change of the AOTF is observed, and compensation for wavelength drift is required in highresolution spectroscopy. In this study, we attempted the stabilization of the wavelength drift by controlling the RFs power fed into the AOTF.
