We report a design of a tunable Ti:sapphire laser capable of operating
in the range between 700 and 800 nm. The continuous, single-mode tuni
ng is achieved by a pseudoexternal cavity consisting of highly reflect
ive mirrors and a diffraction grating. The advantages of this laser in
clude low operational threshold, a simple configuration that involves
only four optical elements, and fine-tuning capabilities. The single l
ongitudinal made of operation was demonstrated at wavelengths between
695 and 725 nm and was limited by the choice of end mirrors in the las
er cavity. (C) 1997 Optical Society of America.