Class information for:
Level 2: FIBER LASER//OPTICS//FIBER AMPLIFIER

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
33 3       OPTICS//IEEE PHOTONICS TECHNOLOGY LETTERS//JOURNAL OF LIGHTWAVE TECHNOLOGY 112980
783 2             FIBER LASER//OPTICS//FIBER AMPLIFIER 12507
1062 1                   FIBER LASER//MODE LOCKING//SATURABLE ABSORBER 2906
2246 1                   MULTIWAVELENGTH FIBER LASER//FIBER LASER//SINGLE LONGITUDINAL MODE 2345
2813 1                   FIBER AMPLIFIER//FIBER LASER//DOUBLE CLAD FIBER 2170
5749 1                   ERBIUM DOPED FIBER AMPLIFIER//GAIN CLAMPING//OPTICAL AMPLIFIERS 1609
6376 1                   MAT HIGH POWER LASER//27 MU M EMISSION//20 MU M EMISSION 1519
11048 1                   COHERENT BEAM COMBINING//COHERENT COMBINING//COHERENT BEAM COMBINATION 1040
20557 1                   FIBER OPT//BI IONS//UNIVALENT BISMUTH 478
21510 1                   ACTIVE Q SWITCH//Q SWITCHED LASERS//FIBER SATURABLE ABSORBER 440

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FIBER LASER authKW 2332946 12% 63% 1480
2 OPTICS WoSSC 429830 76% 2% 9515
3 FIBER AMPLIFIER authKW 298867 2% 63% 190
4 ERBIUM DOPED FIBER AMPLIFIER authKW 297905 2% 58% 205
5 OPTICAL FIBER LASERS authKW 286595 2% 60% 190
6 ERBIUM DOPED FIBER authKW 223978 1% 64% 138
7 OPTICAL FIBER AMPLIFIERS authKW 220617 2% 44% 198
8 SATURABLE ABSORBER authKW 209709 1% 53% 156
9 FIBER OPT address 190040 2% 30% 249
10 ERBIUM DOPED FIBER LASER authKW 183710 1% 81% 90

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 429830 76% 2% 9515
2 Physics, Applied 26364 31% 0% 3874
3 Engineering, Electrical & Electronic 24311 27% 0% 3424
4 Telecommunications 3567 5% 0% 644
5 Materials Science, Ceramics 639 2% 0% 223
6 Physics, Multidisciplinary 570 5% 0% 609
7 Materials Science, Multidisciplinary 99 6% 0% 749
8 Spectroscopy -2 1% 0% 75
9 Nanoscience & Nanotechnology -3 1% 0% 120
10 Instruments & Instrumentation -8 1% 0% 87

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FIBER OPT 190040 2% 30% 249
2 OPTOELECT SCI ENGN 149731 3% 16% 380
3 OPT COMMUN MAT 142301 1% 32% 175
4 PHOTON 123901 6% 7% 750
5 STATE TRANSIENT OPT PHOTON 104345 2% 16% 256
6 LASER FIBER ELECT GRP 102068 1% 63% 64
7 SHANGHAI OPT FINE MECH 96030 4% 8% 471
8 MAT HIGH POWER LASER 93219 1% 24% 154
9 FIBER OPT PHOTON 79458 0% 53% 60
10 XIAN OPT PRECIS MECH 79267 2% 12% 255

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 LASER PHYSICS LETTERS 148234 3% 15% 382
2 IEEE PHOTONICS TECHNOLOGY LETTERS 132646 7% 6% 936
3 LASER PHYSICS 132308 4% 11% 493
4 OPTICS LETTERS 130793 10% 4% 1254
5 OPTICS EXPRESS 127797 11% 4% 1348
6 OPTICS COMMUNICATIONS 48007 6% 3% 716
7 OPTICAL FIBER TECHNOLOGY 33947 1% 10% 130
8 JOURNAL OF LIGHTWAVE TECHNOLOGY 30258 3% 3% 390
9 IEEE PHOTONICS JOURNAL 25911 1% 7% 159
10 ELECTRONICS LETTERS 24606 5% 2% 634

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 FIBER LASER 2332946 12% 63% 1480 Search FIBER+LASER Search FIBER+LASER
2 FIBER AMPLIFIER 298867 2% 63% 190 Search FIBER+AMPLIFIER Search FIBER+AMPLIFIER
3 ERBIUM DOPED FIBER AMPLIFIER 297905 2% 58% 205 Search ERBIUM+DOPED+FIBER+AMPLIFIER Search ERBIUM+DOPED+FIBER+AMPLIFIER
4 OPTICAL FIBER LASERS 286595 2% 60% 190 Search OPTICAL+FIBER+LASERS Search OPTICAL+FIBER+LASERS
5 ERBIUM DOPED FIBER 223978 1% 64% 138 Search ERBIUM+DOPED+FIBER Search ERBIUM+DOPED+FIBER
6 OPTICAL FIBER AMPLIFIERS 220617 2% 44% 198 Search OPTICAL+FIBER+AMPLIFIERS Search OPTICAL+FIBER+AMPLIFIERS
7 SATURABLE ABSORBER 209709 1% 53% 156 Search SATURABLE+ABSORBER Search SATURABLE+ABSORBER
8 ERBIUM DOPED FIBER LASER 183710 1% 81% 90 Search ERBIUM+DOPED+FIBER+LASER Search ERBIUM+DOPED+FIBER+LASER
9 MODE LOCKING 176471 2% 37% 189 Search MODE+LOCKING Search MODE+LOCKING
10 MULTIWAVELENGTH FIBER LASER 176068 1% 90% 78 Search MULTIWAVELENGTH+FIBER+LASER Search MULTIWAVELENGTH+FIBER+LASER

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 1782 PHOTONIC CRYSTAL FIBER//SUPERCONTINUUM GENERATION//CONFINEMENT LOSS
2 599 SOLID STATE LASERS//DIODE PUMPED LASERS//CRYSTAL MAT
3 132 FIBER BRAGG GRATING//FIBER OPTIC SENSOR//OPTICS
4 78 IEEE PHOTONICS TECHNOLOGY LETTERS//JOURNAL OF LIGHTWAVE TECHNOLOGY//OPTICAL FIBER COMMUNICATION
5 496 SCINTILLATOR//JOURNAL OF LUMINESCENCE//JUDD OFELT THEORY
6 1213 OPTICS//OPTICS LETTERS//CHIRPED PULSE AMPLIFICATION
7 1640 TIME FREQUENCY//ATOMIC CLOCKS//FREQUENCY STANDARD
8 2872 RANDOM LASER//RANDOM LASING//NANOOPT MESOSCOP OPT
9 174 SEMICONDUCTOR LASERS//IEEE JOURNAL OF QUANTUM ELECTRONICS//VERTICAL CAVITY SURFACE EMITTING LASERS
10 3404 ACOUSTO OPTICS//ACOUSTO OPTIC TUNABLE FILTER//ACOUSTOOPT

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