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Low-Cost Single-mode Quantum Cascade Lasers Princeton Docket # 10-2622 Currently available commercial single-mode QC lasers either employ distributed feedback or external cavity technique to achieve single-mode emission. Due to the complexity and yield issue of these techniques, the costs and thus the sale prices for single-mode QC lasers are very high, which is a crucial barrier to the... Published: 3/15/2018   |   Inventor(s): Qiang Liu, Claire Gmachl, Kamil Sladek Keywords(s):   Category(s): Opto-Electronics/ Electrical Engineering

Highly Power-Efficient Quantum Cascade Lasers with Ultra-Strong Coupling Injection Princeton Docket # 09-2561 The transport of electrons from the injector ground level to the upper laser level in the active region of a QC laser significantly influences the laser performance. The stronger the coupling between these two levels, the faster electrons can be transferred into the active region, the better is the performance of the... Published: 3/15/2018   |   Inventor(s): Qiang Liu, Anthony Hoffman, Matthew Escarra, Kale Franz, Claire Gmachl, Jacob Khurgin, Yamac Dikmelik Keywords(s):   Category(s): Opto-Electronics/ Electrical Engineering