Temperature dependence of wavelength tuning with semiconductor integrated etalon interference lasers

The temperature behaviour of the electronically wavelength-tunable, separately pumped integrated-etalon-interference laser operating at 0.9 µm is reported. This laser consists of a resonator with curved and straight segments. The lasing wavelength is tuned by separately pumping different segments of the laser. In experiments performed at different temperatures we observe periodical variation of the tuning bandwidth as a function of temperature. For fixed current levels we have the possibility of stable longitudinal mode operation with respect to temperature with a wavelength locking range as large as 17°C within which the wavelength changes at a rate of 0.6 Å/°C. Moreover, by adjusting both injection currents the lasing wavelength can be stabilized to within 1-2 Å up to a temperature range of 15°C.