Class information for:
Level 1: PHOTO THERMO REFRACTIVE GLASS//VOLUME HOLOGRAPHIC GRATING//ULTRASHORT PULSED BEAM

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
263 3       OPTICS//APPLIED OPTICS//OPTICS AND LASERS IN ENGINEERING 45499
3404 2             ACOUSTO OPTICS//ACOUSTO OPTIC TUNABLE FILTER//ACOUSTOOPT 1722
22398 1                   PHOTO THERMO REFRACTIVE GLASS//VOLUME HOLOGRAPHIC GRATING//ULTRASHORT PULSED BEAM 406

Terms with highest relevance score



rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PHOTO THERMO REFRACTIVE GLASS authKW 970329 4% 83% 15
2 VOLUME HOLOGRAPHIC GRATING authKW 371075 3% 34% 14
3 ULTRASHORT PULSED BEAM authKW 253573 2% 47% 7
4 PTR GLASS authKW 232880 1% 100% 3
5 CREOL address 198621 17% 4% 68
6 OPT INFORMAT TECHNOL MAT address 155254 0% 100% 2
7 VOLUME BRAGG GRATINGS authKW 155250 1% 50% 4
8 OPT PHOTON address 106486 16% 2% 63
9 OPTOINFORMAT TECHNOL MAT address 103501 0% 67% 2
10 2D RESTRICTED GRATING authKW 77627 0% 100% 1

Web of Science journal categories



chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 10435 66% 0% 268
2 Materials Science, Ceramics 2425 16% 0% 63
3 Spectroscopy 313 8% 0% 33
4 Physics, Applied 262 19% 0% 76
5 Materials Science, Multidisciplinary 81 13% 0% 54
6 Engineering, Electrical & Electronic 53 9% 0% 38
7 Telecommunications 2 1% 0% 5
8 Physics, Condensed Matter 2 3% 0% 14
9 Materials Science, Coatings & Films 0 1% 0% 3
10 Instruments & Instrumentation 0 1% 0% 5

Address terms



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 CREOL 198621 17% 4% 68
2 OPT INFORMAT TECHNOL MAT 155254 0% 100% 2
3 OPT PHOTON 106486 16% 2% 63
4 OPTOINFORMAT TECHNOL MAT 103501 0% 67% 2
5 AGT 77627 0% 100% 1
6 CONSORZIO RIC E ORAZIONE COMMUN OTT MILANO 77627 0% 100% 1
7 DEMALAMAV 77627 0% 100% 1
8 LAMAV MAT ENGNDEMA 77627 0% 100% 1
9 NANOPHOTON OPTOINFORMAT SCI 77627 0% 100% 1
10 OPTO ELECT SYST OPTO ELECT 77627 0% 100% 1

Journals



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 GLASS PHYSICS AND CHEMISTRY 7980 3% 1% 14
2 GLASS SCIENCE AND TECHNOLOGY 5488 1% 1% 5
3 PHYSICS AND CHEMISTRY OF GLASSES-EUROPEAN JOURNAL OF GLASS SCIENCE AND TECHNOLOGY PART B 4685 1% 1% 6
4 OPTICS LETTERS 3501 9% 0% 37
5 OPTICS AND SPECTROSCOPY 3469 4% 0% 16
6 JOURNAL OF OPTICAL TECHNOLOGY 2881 3% 0% 11
7 JOURNAL OF NON-CRYSTALLINE SOLIDS 2605 7% 0% 28
8 OPTICAL MATERIALS EXPRESS 2549 2% 0% 8
9 OPTIKA I SPEKTROSKOPIYA 2533 4% 0% 15
10 OPTICS EXPRESS 2343 8% 0% 33

Author Key Words



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 PHOTO THERMO REFRACTIVE GLASS 970329 4% 83% 15 Search PHOTO+THERMO+REFRACTIVE+GLASS Search PHOTO+THERMO+REFRACTIVE+GLASS
2 VOLUME HOLOGRAPHIC GRATING 371075 3% 34% 14 Search VOLUME+HOLOGRAPHIC+GRATING Search VOLUME+HOLOGRAPHIC+GRATING
3 ULTRASHORT PULSED BEAM 253573 2% 47% 7 Search ULTRASHORT+PULSED+BEAM Search ULTRASHORT+PULSED+BEAM
4 PTR GLASS 232880 1% 100% 3 Search PTR+GLASS Search PTR+GLASS
5 VOLUME BRAGG GRATINGS 155250 1% 50% 4 Search VOLUME+BRAGG+GRATINGS Search VOLUME+BRAGG+GRATINGS
6 2D RESTRICTED GRATING 77627 0% 100% 1 Search 2D+RESTRICTED+GRATING Search 2D+RESTRICTED+GRATING
7 BEAM PROPAGATION PROFILES 77627 0% 100% 1 Search BEAM+PROPAGATION+PROFILES Search BEAM+PROPAGATION+PROFILES
8 CERIUM IN GLASS 77627 0% 100% 1 Search CERIUM+IN+GLASS Search CERIUM+IN+GLASS
9 CHANNEL AND SLAB WAVEGUIDES 77627 0% 100% 1 Search CHANNEL+AND+SLAB+WAVEGUIDES Search CHANNEL+AND+SLAB+WAVEGUIDES
10 CHIRPED VOLUME BRAGG GRATINGS 77627 0% 100% 1 Search CHIRPED+VOLUME+BRAGG+GRATINGS Search CHIRPED+VOLUME+BRAGG+GRATINGS

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 10140 OPT SPECT NANOMAT//ADV OPT MAT GRP//FUNCT FILMS
2 26309 ALKALI LASERS//DPAL//DIODE PUMPED ALKALI LASER
3 38660 PHOTOVOLTA METROL//ADDITIVE COLORATION//COLLOIDAL CENTER
4 22199 ULTRASONIC LIGHT DIFFRACTION//ACOUSTOOPT LASER PHYS//ACOUSTO OPTICS
5 21939 TIME TO SPACE CONVERSION//SPECTRAL HOLOGRAPHY//COHERENCE GATING
6 11048 COHERENT BEAM COMBINING//COHERENT COMBINING//COHERENT BEAM COMBINATION
7 26538 GLASTECHNISCHE BERICHTE-GLASS SCIENCE AND TECHNOLOGY//DANISH MAT TECHNOL//VITREOUS SIO2
8 4500 PHOTOPOLYMER//HOLOGRAPHIC DATA STORAGE//IND ENGN OPT
9 11830 VITREOUS MAT//LITHIUM DISILICATE//LITHIUM DISILICATE GLASS
10 22277 SCINTILLATING GLASS//EU3 ACTIVATED BOROGERMANATE SCINTILLATING GLASSES//FU RONG

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