Monomode operation at 6.6 mu m of an external resonator laser with ant
i-reflection-coated PbSe diodes is reported. Changing the angle of the
Littrow configuration grating the emission wavenumber was varied over
50 cm(-1). A continuous tuning range of 1.2 cm(-1) was obtained by si
multaneous control of resonator length, grating angle and diode curren
t. (C) 1998 Elsevier Science B.V. All rights reserved.