We have studied the lasing mode control of a diode-pumped Tm:YLF micro
chip laser with a multiple resonator consisting of a laser crystal and
the air gap as an etalon. The range of the tuning wavelength was meas
ured to be 4.6 nm for a change of the air gap length of 300 nm. (C) 19
98 Elsevier Science B.V.