Fig. 2From: Sample Grating Distributed Feedback Quantum Cascade Laser ArrayThe power-current-voltage (P-I-V) curves of the DFB array with HR coated facets when operated in CW at 20 °C. The size of DFB ridge is 2-mm-long and 12-um-wide. The blue ones are P-I-V curves for a FP cavity laser from the same wafer with the same size when operated in CW mode at 20 °CBack to article page