Class information for:
Level 1: QUANTUM CASCADE LASER//QUANTUM CASCADE LASERS QCLS//MICRO NANOSTRUCT

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
13 4 PHYSICS, PARTICLES & FIELDS//PHYSICS, NUCLEAR//OPTICS 1062565
467 3       JOURNAL OF MOLECULAR SPECTROSCOPY//QUANTUM CASCADE LASER//JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 25858
1588 2             QUANTUM CASCADE LASER//WAVELENGTH MODULATION SPECTROSCOPY//WAVELENGTH MODULATION 7455
1174 1                   QUANTUM CASCADE LASER//QUANTUM CASCADE LASERS QCLS//MICRO NANOSTRUCT 2828

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 QUANTUM CASCADE LASER authKW 3159171 16% 64% 442
2 QUANTUM CASCADE LASERS QCLS authKW 470078 2% 94% 45
3 MICRO NANOSTRUCT address 269570 2% 37% 66
4 QUANTUM CASCADE QC LASER authKW 233997 1% 100% 21
5 1123 address 213646 1% 91% 21
6 UNIPOLAR SEMICONDUCTOR LASER authKW 190011 1% 95% 18
7 INTERSUBBAND authKW 158648 1% 40% 36
8 QUANTUM CASCADE LASER QCL authKW 158501 1% 68% 21
9 QUANTUM CASCADE authKW 148556 1% 67% 20
10 QUANTUM DEVICES address 142561 3% 17% 77

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Physics, Applied 19367 53% 0% 1498
2 Optics 13347 29% 0% 826
3 Physics, Condensed Matter 3308 19% 0% 549
4 Engineering, Electrical & Electronic 2843 21% 0% 581
5 Nanoscience & Nanotechnology 597 6% 0% 169
6 Physics, Multidisciplinary 442 7% 0% 209
7 Materials Science, Multidisciplinary 106 8% 0% 230
8 Crystallography 88 2% 0% 61
9 Instruments & Instrumentation 1 1% 0% 31
10 Telecommunications 1 1% 0% 23

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 MICRO NANOSTRUCT 269570 2% 37% 66
2 1123 213646 1% 91% 21
3 QUANTUM DEVICES 142561 3% 17% 77
4 MICROWAVES PHOTON 131047 2% 18% 64
5 EMMY NOETHER GRP MODELING QUANTUM CASCADE DEV 77999 0% 100% 7
6 QUANTUM ELECT 75230 4% 6% 121
7 SEMICOND MAT SCI 68008 3% 7% 94
8 UMR8622 60219 1% 21% 26
9 EPSRC TECHNOL 3 5 60023 1% 19% 29
10 DIPARTIMENTO INTERATENEO FIS M MERLIN 55840 1% 26% 19

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 APPLIED PHYSICS LETTERS 48822 25% 1% 699
2 PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 12858 4% 1% 99
3 OPTICS EXPRESS 12557 7% 1% 202
4 IEEE JOURNAL OF QUANTUM ELECTRONICS 9039 3% 1% 84
5 SEMICONDUCTOR SCIENCE AND TECHNOLOGY 8194 3% 1% 78
6 IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 6370 2% 1% 49
7 NATURE PHOTONICS 5730 1% 2% 24
8 OPTICAL AND QUANTUM ELECTRONICS 3756 1% 1% 38
9 IEEE PHOTONICS TECHNOLOGY LETTERS 3378 3% 0% 72
10 SEMICONDUCTORS 3315 2% 1% 46

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 QUANTUM CASCADE LASER 3159171 16% 64% 442 Search QUANTUM+CASCADE+LASER Search QUANTUM+CASCADE+LASER
2 QUANTUM CASCADE LASERS QCLS 470078 2% 94% 45 Search QUANTUM+CASCADE+LASERS+QCLS Search QUANTUM+CASCADE+LASERS+QCLS
3 QUANTUM CASCADE QC LASER 233997 1% 100% 21 Search QUANTUM+CASCADE+QC+LASER Search QUANTUM+CASCADE+QC+LASER
4 UNIPOLAR SEMICONDUCTOR LASER 190011 1% 95% 18 Search UNIPOLAR+SEMICONDUCTOR+LASER Search UNIPOLAR+SEMICONDUCTOR+LASER
5 INTERSUBBAND 158648 1% 40% 36 Search INTERSUBBAND Search INTERSUBBAND
6 QUANTUM CASCADE LASER QCL 158501 1% 68% 21 Search QUANTUM+CASCADE+LASER+QCL Search QUANTUM+CASCADE+LASER+QCL
7 QUANTUM CASCADE 148556 1% 67% 20 Search QUANTUM+CASCADE Search QUANTUM+CASCADE
8 SUBMILLIMETRE WAVE LASERS 139279 1% 83% 15 Search SUBMILLIMETRE+WAVE+LASERS Search SUBMILLIMETRE+WAVE+LASERS
9 INTERSUBBAND TRANSITION 130135 2% 21% 57 Search INTERSUBBAND+TRANSITION Search INTERSUBBAND+TRANSITION
10 QUANTUM CASCADE STRUCTURES 128464 0% 82% 14 Search QUANTUM+CASCADE+STRUCTURES Search QUANTUM+CASCADE+STRUCTURES

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1


rank cluster_id2 link
1 16972 INGAAS ALASSB//INTERSUBBAND TRANSITION//ACT OPTOGAN
2 4016 QUANTUM WELL INFRARED PHOTODETECTOR//QWIP//QUANTUM WELL INFRARED PHOTODETECTOR QWIP
3 4244 GAINASSB//NEGATIVE LUMINESCENCE//INTERBAND CASCADE LASER
4 22444 SEMICOND OPT THEORY GRP//LANDAU LEVEL LIFETIMES//2 D ELECTRONIC GAS
5 12319 QUARTZ ENHANCED PHOTOACOUSTIC SPECTROSCOPY//PHOTOACOUSTIC SPECTROSCOPY//LASER PHOTOACOUSTIC SPECTROSCOPY
6 3305 WAVELENGTH MODULATION SPECTROSCOPY//TUNABLE DIODE LASER ABSORPTION SPECTROSCOPY//HIGH TEMP GASDYNAM
7 36291 DUAL WAVELENGTH OPERATION//AG OPTOELEKT BAUELEMENTE WERKSTOFFE//ANTIMONY PHOSPHATE GLASS
8 25424 QUANTUM TRANSPARENCY//SYSTEM OF IDENTICAL PARTICLES//ASYMMETRIC COUPLED QUANTUM WELL
9 3884 BLOCH OSCILLATIONS//ELECTRIC FIELD DOMAINS//SEMICONDUCTOR SUPERLATTICES
10 30437 ANALYSIS OF THE COMPOSITION OF EXHALED AIR//ATMOSPHER COMPOSIT RADIAT//CALORIMETER CALIBRATION

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