Monolithic widely tunable quantum cascade laser

Kevin M. Lascola; Richard P. Leavitt; John D. Bruno; John L. Bradshaw; John T. Pham; Frederick J. Towner

doi:10.1117/12.919325

17 May 2012 Monolithic widely tunable quantum cascade laser

Kevin M. Lascola, Richard P. Leavitt, John D. Bruno, John L. Bradshaw, John T. Pham, Frederick J. Towner

Proceedings Volume 8374, Next-Generation Spectroscopic Technologies V; 83740K (2012) https://doi.org/10.1117/12.919325
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

Maxion Technologies has designed a monolithic, widely tunable Quantum Cascade (QC) laser for use in chemical sensing applications. This multi-section QC laser is a monolithically tunable device, similar to those demonstrated in the near IR for telecommunications. Wideband tuning is achieved through grating assisted coupling of the optical mode between lateral waveguides, allowing ~10 times the tuning range normally achieved by distributed feedback lasers without incorporation of external optical elements. Compared to implementations in the near IR, the use of lateral waveguides (rather than vertically stacked waveguides) allows the optical mode to maintain the high overlap with the active region necessary for room temperature lasing in the mid-IR. Due to its monolithic design, this laser is expected to be rapidly tunable and usable in field environments due to its insensitivity to shock and vibration, while the wide tuning range of the device will allow for an enhanced ability to discriminate against background chemicals.

Citation Download Citation

Kevin M. Lascola, Richard P. Leavitt, John D. Bruno, John L. Bradshaw, John T. Pham, and Frederick J. Towner "Monolithic widely tunable quantum cascade laser", Proc. SPIE 8374, Next-Generation Spectroscopic Technologies V, 83740K (17 May 2012); https://doi.org/10.1117/12.919325

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