  We developed a simple three-stage amplifying tunable cw diode laser system
that comprises: a Littrow configuration master laser, frequency stabilized with
a dichroic atomic vapor laser lock (DAVLL), an acousto-optic frequency shifter
(AOM), an injection-locked slave laser and a tapered amplifier (TA). Slave
amplifies the frequency-shifted beam and suppresses (within 0.5%) the strong
dependence of its intensity on the AOM carrier frequency, thus acting as an
efficient optical limiter. The beam is further amplified in TA. System operates
at 780 nm, with an output power above 700 mW, a time-averaged linewidth of 0.6
MHz, and a frequency drift below 2 MHz/h. The mode-hop-free tuning range of the
master amounts 2 GHz, DAVLL allows a lock point tunability in the range of 400
MHz. The fine (with some tens of kHz precision) tuning range spans 70 MHz,
determined by the AOM model applied. A detailed description of the system was
given and its performance was tested. The basic components were designed and
manufactured in our lab.
