The DOI matches its Crossref record.
Monolithic integration of room-temperature cw GaAs/AlGaAs lasers on Si substrates via relaxed graded GeSi buffer layers
Abstract
GaAs/Al x Ga (1−x) As quantum well lasers have been demonstrated via organometallic chemical vapor deposition on relaxed graded Ge/GexSi(1−x) virtual substrates on Si. A number of GaAs/Ge/Si integration issues including Ge autodoping behavior in GaAs, reduced critical thickness due to thermal expansion mismatch, and complications with mirror facet cleaving have been overcome. Despite unoptimized laser structures with high series resistance and large threshold current densities, surface threading dislocation densities for GaAs/AlGaAs lasers on Si substrates as low as 2×106 cm−2 permitted continuous room-temperature lasing at a wavelength of 858 nm. The laser structures are uncoated edge-emitting broad-area devices with differential quantum efficiencies of 0.24 and threshold current densities of 577 A/cm2. Identical devices grown on commercial GaAs substrates showed similar behavior. This comparative data agrees with previous measurements of near-bulk minority carrier lifetimes in GaAs grown on Ge/GeSi/Si substrates.
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
Cited by
Recent progress in lasers on silicon
Liang, D., & Bowers, J. E. (2010) · Nature Photonics · doi:10.1038/nphoton.2010.167 · Cited by 1,122
On-chip silicon photonic signaling and processing: a review
Wang, J., & Long, Y. (2018) · Science Bulletin · doi:10.1016/j.scib.2018.05.038 · Cited by 206
Emerging heterogeneous integrated photonic platforms on silicon
Fathpour, S. (2014) · Nanophotonics · doi:10.1515/nanoph-2014-0024 · Cited by 74
Metadata
- Authors
- Groenert, M. E., Leitz, C. W., Pitera, A. J., Yang, V., Lee, H., Ram, R. J., & Fitzgerald, E. A.
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 2003-01-01
- Volume
- 93
- Issue
- 1
- Pages
- 362-367
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W2078506594
- Cited by
- 277
- References
- 0
- FWCI
- 8.06
- 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: Monolithic integration of room-temperature cw GaAs/AlGaAs lasers on Si substrates via relaxed graded GeSi buffer layers. https://app.cochat.ai/papers/10.1063/1.1525865
- The paper
- Groenert, M. E., Leitz, C. W., Pitera, A. J., Yang, V., Lee, H., Ram, R. J., & Fitzgerald, E. A. (2003). Monolithic integration of room-temperature cw GaAs/AlGaAs lasers on Si substrates via relaxed graded GeSi buffer layers. Journal of Applied Physics. https://doi.org/10.1063/1.1525865
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.
