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Attention Score in Context
| Title |
High power surface emitting terahertz laser with hybrid second- and fourth-order Bragg gratings
|
|---|---|
| Published in |
Nature Communications, April 2018
|
| DOI | 10.1038/s41467-018-03697-9 |
| Pubmed ID | |
| Authors |
Yuan Jin, Liang Gao, Ji Chen, Chongzhao Wu, John L. Reno, Sushil Kumar |
| Abstract |
A surface-emitting distributed feedback (DFB) laser with second-order gratings typically excites an antisymmetric mode that has low radiative efficiency and a double-lobed far-field beam. The radiative efficiency could be increased by using curved and chirped gratings for infrared diode lasers, plasmon-assisted mode selection for mid-infrared quantum cascade lasers (QCLs), and graded photonic structures for terahertz QCLs. Here, we demonstrate a new hybrid grating scheme that uses a superposition of second and fourth-order Bragg gratings that excite a symmetric mode with much greater radiative efficiency. The scheme is implemented for terahertz QCLs with metallic waveguides. Peak power output of 170 mW with a slope-efficiency of 993 mW A-1 is detected with robust single-mode single-lobed emission for a 3.4 THz QCL operating at 62 K. The hybrid grating scheme is arguably simpler to implement than aforementioned DFB schemes and could be used to increase power output for surface-emitting DFB lasers at any wavelength. |
X Demographics
The data shown below were collected from the profiles of 8 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 4 | 50% |
| United Kingdom | 1 | 13% |
| Australia | 1 | 13% |
| Unknown | 2 | 25% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 7 | 88% |
| Scientists | 1 | 13% |
Mendeley readers
The data shown below were compiled from readership statistics for 47 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 47 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 13 | 28% |
| Researcher | 11 | 23% |
| Student > Master | 5 | 11% |
| Student > Doctoral Student | 5 | 11% |
| Student > Postgraduate | 2 | 4% |
| Other | 2 | 4% |
| Unknown | 9 | 19% |
| Readers by discipline | Count | As % |
|---|---|---|
| Physics and Astronomy | 16 | 34% |
| Engineering | 11 | 23% |
| Agricultural and Biological Sciences | 3 | 6% |
| Medicine and Dentistry | 2 | 4% |
| Energy | 1 | 2% |
| Other | 2 | 4% |
| Unknown | 12 | 26% |
Attention Score in Context
This research output has an Altmetric Attention Score of 114. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 June 2020.
All research outputs
#311,935
of 23,041,514 outputs
Outputs from Nature Communications
#4,979
of 47,462 outputs
Outputs of similar age
#8,000
of 329,169 outputs
Outputs of similar age from Nature Communications
#142
of 1,206 outputs
Altmetric has tracked 23,041,514 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 98th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 47,462 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 55.9. This one has done well, scoring higher than 89% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 329,169 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 97% of its contemporaries.
We're also able to compare this research output to 1,206 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 88% of its contemporaries.