Class information for:
Level 1: VERTICAL CAVITY SURFACE EMITTING LASERS//SURFACE EMITTING LASERS//VCSEL

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

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 VERTICAL CAVITY SURFACE EMITTING LASERS authKW 1663664 10% 54% 294
2 SURFACE EMITTING LASERS authKW 1083902 7% 48% 214
3 VCSEL authKW 911049 7% 43% 204
4 VERTICAL CAVITY SURFACE EMITTING LASER VCSEL authKW 670374 5% 43% 149
5 VERTICAL CAVITY SURFACE EMITTING LASERS VCSELS authKW 631175 4% 48% 124
6 SEMICONDUCTOR LASERS authKW 361542 13% 9% 380
7 HIGH SPEED MODULATION authKW 281043 1% 70% 38
8 VERTICAL CAVITY LASERS authKW 175153 1% 56% 30
9 ZENTRUM NANOPHOTON address 168164 1% 80% 20
10 OXIDE APERTURE authKW 132061 1% 74% 17

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 36549 46% 0% 1378
2 Physics, Applied 25420 59% 0% 1755
3 Engineering, Electrical & Electronic 21795 50% 0% 1502
4 Telecommunications 800 5% 0% 150
5 Physics, Condensed Matter 111 5% 0% 164
6 Physics, Multidisciplinary 84 4% 0% 127
7 Crystallography 74 2% 0% 60
8 Materials Science, Multidisciplinary 25 6% 0% 181
9 Nanoscience & Nanotechnology 14 2% 0% 55
10 Materials Science, Characterization, Testing 4 0% 0% 9

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ZENTRUM NANOPHOTON 168164 1% 80% 20
2 PL PHYS PHOTON 78290 2% 16% 48
3 MICROELECT NANOTECHNOL PROGRAM 56052 0% 67% 8
4 PHOTON INTEGRAT SYST 50602 1% 28% 17
5 COMPOUND SEMICOND SCI TECHNOL 32842 0% 63% 5
6 IST NAZL FIS MATUNITA RIC TORINO 31532 0% 100% 3
7 PHYS NANOSTRUCT 25432 1% 7% 33
8 PRECIS INTELLIGENCE 23992 2% 4% 54
9 PL PHYS PHOTON TW TONA 22250 0% 35% 6
10 1312 21022 0% 100% 2

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 IEEE PHOTONICS TECHNOLOGY LETTERS 111079 14% 3% 418
2 IEEE JOURNAL OF QUANTUM ELECTRONICS 50810 7% 2% 204
3 IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 42030 4% 3% 129
4 ELECTRONICS LETTERS 34641 12% 1% 363
5 APPLIED PHYSICS LETTERS 18485 15% 0% 447
6 IEE PROCEEDINGS-OPTOELECTRONICS 14645 1% 4% 34
7 JOURNAL OF LIGHTWAVE TECHNOLOGY 6417 3% 1% 88
8 OPTICAL AND QUANTUM ELECTRONICS 4126 1% 1% 41
9 IET OPTOELECTRONICS 3058 0% 3% 11
10 OPTO-ELECTRONICS REVIEW 2138 0% 2% 13

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 VERTICAL CAVITY SURFACE EMITTING LASERS 1663664 10% 54% 294 Search VERTICAL+CAVITY+SURFACE+EMITTING+LASERS Search VERTICAL+CAVITY+SURFACE+EMITTING+LASERS
2 SURFACE EMITTING LASERS 1083902 7% 48% 214 Search SURFACE+EMITTING+LASERS Search SURFACE+EMITTING+LASERS
3 VCSEL 911049 7% 43% 204 Search VCSEL Search VCSEL
4 VERTICAL CAVITY SURFACE EMITTING LASER VCSEL 670374 5% 43% 149 Search VERTICAL+CAVITY+SURFACE+EMITTING+LASER+VCSEL Search VERTICAL+CAVITY+SURFACE+EMITTING+LASER+VCSEL
5 VERTICAL CAVITY SURFACE EMITTING LASERS VCSELS 631175 4% 48% 124 Search VERTICAL+CAVITY+SURFACE+EMITTING+LASERS+VCSELS Search VERTICAL+CAVITY+SURFACE+EMITTING+LASERS+VCSELS
6 SEMICONDUCTOR LASERS 361542 13% 9% 380 Search SEMICONDUCTOR+LASERS Search SEMICONDUCTOR+LASERS
7 HIGH SPEED MODULATION 281043 1% 70% 38 Search HIGH+SPEED+MODULATION Search HIGH+SPEED+MODULATION
8 VERTICAL CAVITY LASERS 175153 1% 56% 30 Search VERTICAL+CAVITY+LASERS Search VERTICAL+CAVITY+LASERS
9 OXIDE APERTURE 132061 1% 74% 17 Search OXIDE+APERTURE Search OXIDE+APERTURE
10 SEMICONDUCTOR LASER ARRAYS 125074 1% 32% 37 Search SEMICONDUCTOR+LASER+ARRAYS Search SEMICONDUCTOR+LASER+ARRAYS

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 12891 OPTICAL INJECTION//INJECTION LOCKING//POLARIZATION BISTABILITY
2 18657 MICROSPECTROMETER//TUNABLE OPTICAL FILTER//ME EI
3 31677 TRANSISTOR LASER//TRANSISTOR LASER TL//0 D QUANTUM WELLS
4 32314 MEMBRANE LASER//GAINASP INP//DISTRIBUTED REFLECTOR LASER
5 15766 SEMICONDUCTOR DISK LASER//VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASER VECSEL//VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASERS
6 14486 ALINN//RESONANT CAVITY LIGHT EMITTING DIODES//RESONANT CAVITY LIGHT EMITTING DIODE RCLED
7 4290 OPTICAL INTERCONNECTIONS//OPTICAL INTERCONNECTS//OPTICAL BACKPLANE
8 7137 TAPERED LASERS//HIGH BRIGHTNESS LASERS//BROAD AREA SEMICONDUCTOR LASERS
9 2513 QUANTUM WELL LASERS//SEMICONDUCTOR LASERS//IEEE JOURNAL OF QUANTUM ELECTRONICS
10 3014 OPTICAL FEEDBACK//SEMICONDUCTOR LASERS//OPTICAL CHAOS

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