Microcavity‐Stabilized Quantum Cascade Laser
Abstract
Narrow‐linewidth lasers are key elements in optical metrology and spectroscopy. Spectral purity of these lasers determines accuracy of the measurements and quality of collected data. Solid state and fiber lasers are stabilized to relatively large and complex external optical cavities or narrow atomic and molecular transitions to improve their spectral purity. While this stabilization technique is rather generic, its complexity increases tremendously moving to longer wavelenghts, to the infrared (IR) range. Inherent increase of losses of optical materials at longer wavelengths hinders realization of compact, room temperature, high finesse IR cavities suitable for laser stabilization. In this paper, we report on demonstration of quantum cascade lasers stabilized to high‐Q crystalline mid‐IR microcavities. The lasers operating at room temperature in the 4.3‐4.6 μm region have a linewidth approaching 10 kHz and are promising for on‐chip mid‐IR and IR spectrometers. image
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 24, 2015
- Source ID
- 10.1002/lpor.201500214
Entities
People
- Anatoliy Savchenkov
- Andrey B. Matsko
- Danny Eliyahu
- Giacomo Insero
- Iacopo Galli
- Lute Maleki
- Mario Siciliani De Cumis
- Naota Akikusa
- Paolo De Natale
- Simone Borri
- Vladimir Ilchenko
Organizations
- Air Force Office of Scientific Research
- Development Bureau
- Istituto Nazionale di Fisica Nucleare