Our standard diffraction grating for near-infrared operation is a gold-coated 1800 lines/mm holographic grating on a 15x15x3 mm3 substrate (Richardson Grating Laboratory 35-83-X-330). With the light polarized parallel to the lines of the grating it provides 20% feedback, sufficient for good tunability and stability with many laser diodes, while the 80% output coupling gives high output power. The grating is mounted on a 16 mm diameter x2 mm thick disk piezoelectric transducer (PZT) to provide fine adjustment of the cavity length for scanning the laser frequency.