The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
186 K operation of terahertz quantum-cascade lasers based on a diagonal design
Abstract
Resonant-phonon terahertz quantum-cascade lasers operating up to a heat-sink temperature of 186 K are demonstrated. This record temperature performance is achieved based on a diagonal design, with the objective to increase the upper-state lifetime and therefore the gain at elevated temperatures. The increased diagonality also lowers the operating current densities by limiting the flow of parasitic leakage current. Quantitatively, the diagonality is characterized by a radiative oscillator strength that is smaller by a factor of two from the least of any previously published designs. At the lasing frequency of 3.9 THz, 63 mW of peak optical power was measured at 5 K, and approximately 5 mW could still be detected at 180 K.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Faist, J., Capasso, F., Sivco, D. L., Sirtori, C., Hutchinson, A. L., & Cho, A. Y. (1994) · Science · doi:10.1126/science.264.5158.553 · Cited by 4,552
Terahertz semiconductor-heterostructure laser
Köhler, R., Tredicucci, A., Beltram, F., Beere, H. E., Linfield, E. H., Davies, A. G., Ritchie, D. A., Iotti, R. C., & Rossi, F. (2002) · Nature · doi:10.1038/417156a · Cited by 2,722
2.9 THz quantum cascade lasers operating up to 70K in continuous wave
Barbieri, S., Alton, J., Beere, H. E., et al. (2004) · Applied Physics Letters · doi:10.1063/1.1784874 · Cited by 239
Analysis of transport properties of tetrahertz quantum cascade lasers
Callebaut, H., Kumar, S., Williams, B. S., Hu, Q., & Reno, J. L. (2003) · Applied Physics Letters · doi:10.1063/1.1590749 · Cited by 101
Self-citation
Cited by
Quantum cascade lasers: 20 years of challenges
Vitiello, M. S., Scalari, G., Williams, B., & De Natale, P. (2015) · Optics Express · doi:10.1364/oe.23.005167 · Cited by 512
Coherent sampling of active mode-locked terahertz quantum cascade lasers and frequency synthesis
Barbieri, S., Ravaro, M., Gellie, P., Santarelli, G., Manquest, C., Sirtori, C., Khanna, S. P., Linfield, E. H., & Davies, A. G. (2011) · Nature Photonics · doi:10.1038/nphoton.2011.49 · Cited by 223
High Temperature Superconductor Terahertz Emitters: Fundamental Physics and Its Applications
Kashiwagi, T., Tsujimoto, M., Yamamoto, T., Minami, H., Yamaki, K., Delfanazari, K., Deguchi, K., Orita, N., Koike, T., Nakayama, R., et al. (2012) · Japanese Journal of Applied Physics · doi:10.1143/jjap.51.010113 · Cited by 83
Study on terahertz emission and optical/terahertz pulse responses with superconductors
Kawayama, I., Zhang, C., Wang, H., & Tonouchi, M. (2013) · Superconductor Science and Technology · doi:10.1088/0953-2048/26/9/093002 · Cited by 30
Metadata
- Authors
- Kumar, S., Hu, Q., & Reno, J. L.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2009-03-30
- Volume
- 94
- Issue
- 13
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W1978662647
- Cited by
- 362
- References
- 4
- FWCI
- 24.61
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: 186 K operation of terahertz quantum-cascade lasers based on a diagonal design. https://app.cochat.ai/papers/10.1063/1.3114418
- The paper
- Kumar, S., Hu, Q., & Reno, J. L. (2009). 186 K operation of terahertz quantum-cascade lasers based on a diagonal design. Applied Physics Letters. https://doi.org/10.1063/1.3114418
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
