Class information for:
Level 1: QUASI PHASE MATCHING//FERROELECT//DOMAIN INVERSION

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
456 3       LITHIUM NIOBATE//OPTICS//LINBO3 26210
513 2             LITHIUM NIOBATE//LINBO3//QUASI PHASE MATCHING 15644
2418 1                   QUASI PHASE MATCHING//FERROELECT//DOMAIN INVERSION 2290

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 QUASI PHASE MATCHING authKW 892366 6% 48% 135
2 FERROELECT address 312921 2% 41% 55
3 DOMAIN INVERSION authKW 267575 1% 59% 33
4 DOMAIN KINETICS authKW 264202 1% 80% 24
5 PERIODICALLY POLED LITHIUM NIOBATE authKW 220144 1% 50% 32
6 LITHIUM NIOBATE authKW 195154 5% 11% 124
7 PERIODICALLY POLED LITHIUM NIOBATE PPLN authKW 181970 1% 58% 23
8 REGULAR DOMAIN STRUCTURE authKW 141538 1% 86% 12
9 PERIODICALLY POLED LINBO3 authKW 140728 1% 68% 15
10 PERIODICALLY POLED STRUCTURE authKW 114672 0% 83% 10

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 28383 46% 0% 1061
2 Physics, Applied 7423 38% 0% 860
3 Physics, Condensed Matter 1073 13% 0% 302
4 Engineering, Electrical & Electronic 934 14% 0% 325
5 Materials Science, Multidisciplinary 364 12% 0% 282
6 Physics, Multidisciplinary 287 7% 0% 156
7 Crystallography 74 2% 0% 50
8 Telecommunications 28 2% 0% 37
9 Spectroscopy 5 1% 0% 25
10 Acoustics 2 1% 0% 12

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FERROELECT 312921 2% 41% 55
2 STATE FIBER OPT LOCAL AREA COMMUN NETWORK 110032 2% 22% 36
3 ADV PHOTON CONCEPTS 79312 1% 41% 14
4 ARC ULTRA HIGH BANDWIDTH DEVICES OPT SYST CUD 68805 0% 100% 5
5 DIEET 61183 1% 34% 13
6 CHARGED PARTICLE BEAMS 55044 0% 100% 4
7 SYST ELECT OPTRON 49144 0% 71% 5
8 UER ELECT 49144 0% 71% 5
9 EDWARD L GINZTON 40391 2% 6% 52
10 STATE FIBER OPT LOCAL AREA NETWORK ADV 35379 0% 43% 6

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FERROELECTRICS 28772 7% 1% 163
2 OPTICS LETTERS 21767 10% 1% 219
3 OPTICS EXPRESS 11128 7% 0% 171
4 APPLIED PHYSICS LETTERS 10608 13% 0% 297
5 APPLIED PHYSICS B-LASERS AND OPTICS 8385 3% 1% 69
6 JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 7594 3% 1% 79
7 OPTICS COMMUNICATIONS 3212 3% 0% 80
8 JOURNAL OF RUSSIAN LASER RESEARCH 3029 1% 1% 16
9 IEEE PHOTONICS TECHNOLOGY LETTERS 2999 3% 0% 61
10 IEEE JOURNAL OF QUANTUM ELECTRONICS 2499 2% 0% 40

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 QUASI PHASE MATCHING 892366 6% 48% 135 Search QUASI+PHASE+MATCHING Search QUASI+PHASE+MATCHING
2 DOMAIN INVERSION 267575 1% 59% 33 Search DOMAIN+INVERSION Search DOMAIN+INVERSION
3 DOMAIN KINETICS 264202 1% 80% 24 Search DOMAIN+KINETICS Search DOMAIN+KINETICS
4 PERIODICALLY POLED LITHIUM NIOBATE 220144 1% 50% 32 Search PERIODICALLY+POLED+LITHIUM+NIOBATE Search PERIODICALLY+POLED+LITHIUM+NIOBATE
5 LITHIUM NIOBATE 195154 5% 11% 124 Search LITHIUM+NIOBATE Search LITHIUM+NIOBATE
6 PERIODICALLY POLED LITHIUM NIOBATE PPLN 181970 1% 58% 23 Search PERIODICALLY+POLED+LITHIUM+NIOBATE+PPLN Search PERIODICALLY+POLED+LITHIUM+NIOBATE+PPLN
7 REGULAR DOMAIN STRUCTURE 141538 1% 86% 12 Search REGULAR+DOMAIN+STRUCTURE Search REGULAR+DOMAIN+STRUCTURE
8 PERIODICALLY POLED LINBO3 140728 1% 68% 15 Search PERIODICALLY+POLED+LINBO3 Search PERIODICALLY+POLED+LINBO3
9 PERIODICALLY POLED STRUCTURE 114672 0% 83% 10 Search PERIODICALLY+POLED+STRUCTURE Search PERIODICALLY+POLED+STRUCTURE
10 QUASI PHASE MATCHING QPM 113624 1% 52% 16 Search QUASI+PHASE+MATCHING+QPM Search QUASI+PHASE+MATCHING+QPM

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 19371 NONLINEAR OPTIC CRYSTAL//PPKTP CRYSTAL//PPKTP
2 21703 TOTAL INTERNAL REFLECTION QUASI PHASE MATCHING//BRAGG REFLECTION WAVEGUIDE//ISOTROPIC SEMICONDUCTORS
3 4030 OPTICAL PARAMETRIC OSCILLATOR//DIFFERENCE FREQUENCY GENERATION//INTRACAVITY OPTICAL PARAMETRIC OSCILLATOR
4 12227 QUADRATIC SOLITONS//CASCADED NONLINEARITY//RECH COMMUN OPT MICROONDES
5 12389 PROTON EXCHANGE//PROTON EXCHANGED WAVEGUIDE//LITHIUM NIOBATE
6 1080 LITHIUM NIOBATE//OPTOELECT INFORMAT ENGN//PRECIS RUMENTS OPTOELECT ENGN
7 10618 KTIOPO4//OXYPHOSPHATE//RBTIOPO4
8 6396 SCANNING NONLINEAR DIELECTRIC MICROSCOPY//PIEZORESPONSE FORCE MICROSCOPY//FERROELECTRIC DATA STORAGE
9 23796 FERROELASTOELECTRIC//ULYANOVSK//ULYANOVSK BRANCH
10 17494 LINBO3//LINBO3 THIN FILM//BA2NANB5O15

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