Abstract
Unidirectional emission micro-cavity lasers and their array are reported. Quantum cascade laser material with an emission wavelength centered at about 10μm has been shaped into compact, notched ellipse-shaped cavities to obtain unidirectional emission. Up to 13mW of light output peak power at room temperature is obtained with a unidirectional emission at far-field divergence angle of about 6.5° at full width of half maximum from the micro-cavity laser with structure size of 120μm. Meanwhile, the micro-cavity lasers with different structure sizes are also fabricated. Their light output characteristics such as output power and threshold current density are compared and investigated in experiment. Finally the unidirectional emission micro-cavity laser array was also achieved to reach a higher power of 58mW.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call