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S. Slivken

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Articles by S. Slivken

High-brightness LWIR quantum cascade lasers

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By F. Wang, M. Razeghi, S. Slivken
| osapublishing.org
Abstract Long-wave infrared (LWIR, $\lambda \approx {8} - {12}\;\unicode{x00B5}{\rm m}$) quantum cascade lasers (QCLs) are drawing increasing interest, as they provide the possibility of long-distance transmission of light through the atmosphere owing to the reduced water absorption. However, their development has been lagging behind the shorter wavelength QCLs due to much bigger technological challenges.
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Shortwave quantum cascade laser frequency comb for multi-heterodyne spectroscopy

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By Q. Lu, S. Slivken, S. Manna, D. H. Wu
| AIP Publishing
Optical frequency combs11. T. Udem, R. Holzwarth, and T. W. Hänsch, “Optical frequency metrology,” Nature 416, 233–237 (2002). https://doi.org/10.1038/416233a emitting a spectrum of discrete, evenly spaced narrow lines with a stable phase relation serve as unique optical rulers in frequency domains. The relation of radio frequency (RF) to the optical domain establishes a phase coherent link and provides a “clockwork” that enables counting of optical frequencies at unprecedented precisions.22. M. J.
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High power frequency comb based on mid-infrared quantum cascade laser at λ ∼ 9 μm

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By Q. Lu, M. Razeghi, S. Slivken, N. Bandyopadhyay
| AIP Publishing
frequency combs Optical 11. T. Udem, R. Holzwarth, and T. W. Hänsch, “ Optical frequency metrology,” Nature 416, 233–237 (2002). https://doi.org/10.1038/416233a are valuable tool for spectroscopy in the mid-infrared (mid-IR) spectral region, where a large number of molecules have strong absorption features. The evenly spaced modes in the frequency domain enable the frequency comb to act as a ruler and provide unprecedented precision and speed compared with other spectrometric techniques.
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