Class information for:
Level 2: SEMICONDUCTOR LASERS//IEEE JOURNAL OF QUANTUM ELECTRONICS//VERTICAL CAVITY SURFACE EMITTING LASERS

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
1 4 PHYSICS, CONDENSED MATTER//PHYSICS, APPLIED//MATERIALS SCIENCE, MULTIDISCIPLINARY 2188495
64 3       SEMICONDUCTOR LASERS//PHYSICS, APPLIED//PHYSICS, CONDENSED MATTER 89567
174 2             SEMICONDUCTOR LASERS//IEEE JOURNAL OF QUANTUM ELECTRONICS//VERTICAL CAVITY SURFACE EMITTING LASERS 21466
920 1                   VERTICAL CAVITY SURFACE EMITTING LASERS//SURFACE EMITTING LASERS//VCSEL 2998
1167 1                   DISTRIBUTED FEEDBACK LASERS//MICROWAVE PHOTON TECHNOL//SEMICONDUCTOR LASERS 2833
2513 1                   QUANTUM WELL LASERS//SEMICONDUCTOR LASERS//IEEE JOURNAL OF QUANTUM ELECTRONICS 2255
3014 1                   OPTICAL FEEDBACK//SEMICONDUCTOR LASERS//OPTICAL CHAOS 2115
6747 1                   CATASTROPHIC OPTICAL DAMAGE//OPT TRANSMISS COMPONENTS//IEEE JOURNAL OF QUANTUM ELECTRONICS 1474
6774 1                   QUANTUM DOT LASERS//QUANTUM DOT QD//QUANTUM DOT QD LASER 1470
7137 1                   TAPERED LASERS//HIGH BRIGHTNESS LASERS//BROAD AREA SEMICONDUCTOR LASERS 1428
9079 1                   MODE LOCKED LASERS//OPTICAL PULSE GENERATION//SEMICONDUCTOR LASERS 1220
12891 1                   OPTICAL INJECTION//INJECTION LOCKING//POLARIZATION BISTABILITY 904
15766 1                   SEMICONDUCTOR DISK LASER//VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASER VECSEL//VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASERS 720
17789 1                   SOVIET PHYSICS SEMICONDUCTORS-USSR//DIODE FIBER COUPLING//DISTRIBUTION OF TEMPERATURES 609
18518 1                   INTERNAL OPTICAL LOSS//BIPOLAR CASCADE LASERS//THYRISTOR HETEROSTRUCTURE 571
18956 1                   ADV TELECOMMUN QUANTUM ELECT//EXCESS QUANTUM NOISE//SPATIAL FRACTALS 551
19471 1                   SELF SUSTAINED PULSATION//SILC BLD//RISA STRUCTURE 527
21832 1                   FEEDBACK NOISE//MODE COMPETITION PHENOMENA//OPTICAL FEEDBACK NOISE 427
24663 1                   SUPERLUMINESCENT DIODE//SUPERLUMINESCENT DIODES SLDS//SUPERLUMINESCENT DIODE SLD 328
27996 1                   SEMICONDUCTOR RING LASER SRL//MICRORING LASERS//SEMICONDUCTOR RING LASERS SRLS 236
31677 1                   TRANSISTOR LASER//TRANSISTOR LASER TL//0 D QUANTUM WELLS 163
32314 1                   MEMBRANE LASER//GAINASP INP//DISTRIBUTED REFLECTOR LASER 153
33560 1                   STRAIN INDUCED OPTICAL WAVEGUIDE//DIEE INFM//FOURIER TRANSFORM FT METHOD 137
33815 1                   OPTICAL TAPE//PARALLEL RECORDING//BIT SKEW COMPENSATION 133
35269 1                   EXTERNAL CAVITY SEMICONDUCTOR LASERS ECSLS//FLAT FIBRE//FIBER GRATING LASER 114
36291 1                   DUAL WAVELENGTH OPERATION//AG OPTOELEKT BAUELEMENTE WERKSTOFFE//ANTIMONY PHOSPHATE GLASS 100

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SEMICONDUCTOR LASERS authKW 1910784 11% 56% 2338
2 IEEE JOURNAL OF QUANTUM ELECTRONICS journal 753099 10% 25% 2099
3 VERTICAL CAVITY SURFACE EMITTING LASERS authKW 379421 2% 69% 376
4 IEEE PHOTONICS TECHNOLOGY LETTERS journal 351349 9% 12% 1993
5 SURFACE EMITTING LASERS authKW 289141 1% 67% 296
6 OPTICS WoSSC 260346 46% 2% 9842
7 VERTICAL CAVITY SURFACE EMITTING LASERS VCSELS authKW 219936 1% 77% 196
8 QUANTUM WELL LASERS authKW 206822 1% 52% 271
9 ELECTRONICS LETTERS journal 199717 11% 6% 2335
10 VCSEL authKW 174246 1% 50% 239

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 260346 46% 2% 9842
2 Physics, Applied 139897 52% 1% 11111
3 Engineering, Electrical & Electronic 138662 47% 1% 10175
4 Telecommunications 6017 5% 1% 1097
5 Physics, Multidisciplinary 1353 5% 0% 1157
6 Physics, Condensed Matter 989 6% 0% 1250
7 Physics, Mathematical 318 2% 0% 387
8 Physics, Fluids & Plasmas 130 1% 0% 252
9 Crystallography 72 1% 0% 252
10 Nanoscience & Nanotechnology 27 1% 0% 320

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PL PHYS PHOTON 52177 0% 34% 105
2 HIGH TECHNOL MAT 32360 1% 15% 151
3 MICROWAVE PHOTON TECHNOL 31642 0% 60% 36
4 FERDINAND BRAUN 27935 0% 25% 78
5 REED PHOTON 25642 0% 49% 36
6 ZENTRUM NANOPHOTON 23452 0% 80% 20
7 OPTEL GRP 16286 0% 65% 17
8 DELO 15821 0% 60% 18
9 SEMICOND MAT SCI 15638 1% 9% 125
10 FRONTIER ENGN 15443 0% 34% 31

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 IEEE JOURNAL OF QUANTUM ELECTRONICS 753099 10% 25% 2099
2 IEEE PHOTONICS TECHNOLOGY LETTERS 351349 9% 12% 1993
3 ELECTRONICS LETTERS 199717 11% 6% 2335
4 IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 138716 3% 15% 628
5 APPLIED PHYSICS LETTERS 85371 12% 2% 2585
6 IEE PROCEEDINGS-J OPTOELECTRONICS 47380 1% 26% 124
7 IEE PROCEEDINGS-OPTOELECTRONICS 41305 1% 19% 153
8 JOURNAL OF LIGHTWAVE TECHNOLOGY 38567 3% 5% 578
9 OPTICAL AND QUANTUM ELECTRONICS 36956 2% 8% 328
10 OPTICS LETTERS 15919 3% 2% 588

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 SEMICONDUCTOR LASERS 1910784 11% 56% 2338 Search SEMICONDUCTOR+LASERS Search SEMICONDUCTOR+LASERS
2 VERTICAL CAVITY SURFACE EMITTING LASERS 379421 2% 69% 376 Search VERTICAL+CAVITY+SURFACE+EMITTING+LASERS Search VERTICAL+CAVITY+SURFACE+EMITTING+LASERS
3 SURFACE EMITTING LASERS 289141 1% 67% 296 Search SURFACE+EMITTING+LASERS Search SURFACE+EMITTING+LASERS
4 VERTICAL CAVITY SURFACE EMITTING LASERS VCSELS 219936 1% 77% 196 Search VERTICAL+CAVITY+SURFACE+EMITTING+LASERS+VCSELS Search VERTICAL+CAVITY+SURFACE+EMITTING+LASERS+VCSELS
5 QUANTUM WELL LASERS 206822 1% 52% 271 Search QUANTUM+WELL+LASERS Search QUANTUM+WELL+LASERS
6 VCSEL 174246 1% 50% 239 Search VCSEL Search VCSEL
7 VERTICAL CAVITY SURFACE EMITTING LASER VCSEL 173459 1% 58% 203 Search VERTICAL+CAVITY+SURFACE+EMITTING+LASER+VCSEL Search VERTICAL+CAVITY+SURFACE+EMITTING+LASER+VCSEL
8 OPTICAL FEEDBACK 152291 1% 50% 210 Search OPTICAL+FEEDBACK Search OPTICAL+FEEDBACK
9 DISTRIBUTED FEEDBACK LASERS 137607 1% 41% 227 Search DISTRIBUTED+FEEDBACK+LASERS Search DISTRIBUTED+FEEDBACK+LASERS
10 OPTICAL INJECTION 133568 1% 74% 123 Search OPTICAL+INJECTION Search OPTICAL+INJECTION

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 2


rank cluster_id2 link
1 2008 DIPARTIMENTO FIS INTERATENEO//CAVITY SOLITONS//SOLID STATE RING LASER
2 78 IEEE PHOTONICS TECHNOLOGY LETTERS//JOURNAL OF LIGHTWAVE TECHNOLOGY//OPTICAL FIBER COMMUNICATION
3 3370 SELF MIXING INTERFERENCE//SELF MIXING INTERFEROMETRY//SELF MIXING
4 1236 GAINNAS//DILUTE NITRIDES//ANTIMONIDES
5 504 QUANTUM DOTS//SELF ASSEMBLED QUANTUM DOTS//MOLECULAR BEAM EPITAXY
6 222 JOURNAL OF CRYSTAL GROWTH//PHYSICS, APPLIED//GAAS
7 4201 MEYERS INTERDISCIPLINARY ORGAN MED CHE//ELECTROMETRIC STUDY//MEYERS FUNDAMENTAL ORGAN MED CHEM
8 4271 AT&T TECHNICAL JOURNAL//OPTOCOUPLER//ACTIVATION ENERGY OF RECOVERY
9 274 INTEGRATED OPTICS//OPTICS//JOURNAL OF LIGHTWAVE TECHNOLOGY
10 1536 PHOTODIODE//PHOTODETECTORS//ENGINEERING, ELECTRICAL & ELECTRONIC

Go to start page