Class information for:
Level 1: CHIRPED PULSE AMPLIFICATION//OPTICAL PARAMETRIC CHIRPED PULSE AMPLIFICATION//OPTICAL PARAMETRIC AMPLIFICATION

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
1213 2             OPTICS//OPTICS LETTERS//CHIRPED PULSE AMPLIFICATION 9463
4459 1                   CHIRPED PULSE AMPLIFICATION//OPTICAL PARAMETRIC CHIRPED PULSE AMPLIFICATION//OPTICAL PARAMETRIC AMPLIFICATION 1815

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 CHIRPED PULSE AMPLIFICATION authKW 910550 4% 66% 79
2 OPTICAL PARAMETRIC CHIRPED PULSE AMPLIFICATION authKW 504082 2% 97% 30
3 OPTICAL PARAMETRIC AMPLIFICATION authKW 421048 3% 51% 48
4 OPCPA authKW 306275 1% 84% 21
5 TEMPORAL CONTRAST authKW 164613 1% 59% 16
6 CHIRPED PULSE AMPLIFICATION CPA authKW 163011 1% 72% 13
7 REGENERATIVE AMPLIFIER authKW 149217 1% 45% 19
8 PETAWATT LASER authKW 104784 1% 46% 13
9 GAIN NARROWING authKW 100450 0% 64% 9
10 STATE HIGH FIELD LASER PHYS address 95975 4% 7% 78

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 61109 75% 0% 1367
2 Physics, Applied 2465 26% 0% 464
3 Physics, Multidisciplinary 833 11% 0% 205
4 Engineering, Electrical & Electronic 159 8% 0% 149
5 Instruments & Instrumentation 17 2% 0% 34
6 Spectroscopy 0 1% 0% 15
7 Physics, Atomic, Molecular & Chemical -0 1% 0% 23
8 Materials Science, Characterization, Testing -1 0% 0% 1
9 Physics, Fluids & Plasmas -1 0% 0% 7
10 Physics, Nuclear -2 1% 0% 10

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 STATE HIGH FIELD LASER PHYS 95975 4% 7% 78
2 LASER SOLUT UNIT 93752 0% 60% 9
3 EXTREME LIGHT INFRASTRUCT BEAMLINES 86814 0% 100% 5
4 ULTRAFAST ULTRAINTENSE OPT SCIINFM 52089 0% 100% 3
5 STATE TRANSIENT OPT PHOTON TECHNOL 49594 1% 29% 10
6 SHANGHAI OPT FINE MECH 46815 7% 2% 125
7 ATOM MOL LASER PHYS GRP 46298 0% 67% 4
8 ULTRAINTENSE LASER 39683 0% 57% 4
9 LASER FUS 38812 4% 3% 65
10 LEHRSTUHL BIOMOL OPT 37296 1% 9% 23

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 OPTICS LETTERS 66448 19% 1% 339
2 APPLIED PHYSICS B-LASERS AND OPTICS 33922 7% 2% 123
3 HIGH POWER LASER SCIENCE AND ENGINEERING 26017 1% 10% 15
4 OPTICS EXPRESS 24823 12% 1% 226
5 JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 16099 6% 1% 102
6 OPTICS COMMUNICATIONS 14065 8% 1% 147
7 QUANTUM ELECTRONICS 9209 3% 1% 48
8 ACTA PHYSICA SINICA 6072 5% 0% 85
9 IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 4785 2% 1% 34
10 IEEE JOURNAL OF QUANTUM ELECTRONICS 3502 2% 0% 42

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 CHIRPED PULSE AMPLIFICATION 910550 4% 66% 79 Search CHIRPED+PULSE+AMPLIFICATION Search CHIRPED+PULSE+AMPLIFICATION
2 OPTICAL PARAMETRIC CHIRPED PULSE AMPLIFICATION 504082 2% 97% 30 Search OPTICAL+PARAMETRIC+CHIRPED+PULSE+AMPLIFICATION Search OPTICAL+PARAMETRIC+CHIRPED+PULSE+AMPLIFICATION
3 OPTICAL PARAMETRIC AMPLIFICATION 421048 3% 51% 48 Search OPTICAL+PARAMETRIC+AMPLIFICATION Search OPTICAL+PARAMETRIC+AMPLIFICATION
4 OPCPA 306275 1% 84% 21 Search OPCPA Search OPCPA
5 TEMPORAL CONTRAST 164613 1% 59% 16 Search TEMPORAL+CONTRAST Search TEMPORAL+CONTRAST
6 CHIRPED PULSE AMPLIFICATION CPA 163011 1% 72% 13 Search CHIRPED+PULSE+AMPLIFICATION+CPA Search CHIRPED+PULSE+AMPLIFICATION+CPA
7 REGENERATIVE AMPLIFIER 149217 1% 45% 19 Search REGENERATIVE+AMPLIFIER Search REGENERATIVE+AMPLIFIER
8 PETAWATT LASER 104784 1% 46% 13 Search PETAWATT+LASER Search PETAWATT+LASER
9 GAIN NARROWING 100450 0% 64% 9 Search GAIN+NARROWING Search GAIN+NARROWING
10 FEMTOSECOND OPTICAL PARAMETRIC AMPLIFICATION 86814 0% 100% 5 Search FEMTOSECOND+OPTICAL+PARAMETRIC+AMPLIFICATION Search FEMTOSECOND+OPTICAL+PARAMETRIC+AMPLIFICATION

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 10776 PULSE CHARACTERIZATION//OPTICAL PULSE MEASUREMENTS//FREQUENCY RESOLVED OPTICAL GATING
2 19560 YB YAG//DISK LASER//YB YAG LASER
3 8113 KERR LENS MODE LOCKING//CR LISAF//CHIRPED MIRRORS
4 4030 OPTICAL PARAMETRIC OSCILLATOR//DIFFERENCE FREQUENCY GENERATION//INTRACAVITY OPTICAL PARAMETRIC OSCILLATOR
5 22036 HOT IMAGE//SMALL SCALE SELF FOCUSING//HIGH POWER LASER BEAM
6 12227 QUADRATIC SOLITONS//CASCADED NONLINEARITY//RECH COMMUN OPT MICROONDES
7 32072 ANGULAR PHASE MATCHING BANDWIDTHS//CDA AND LBO CRYSTALS//FEMTOSECOND CR FORSTERITE LASER
8 9846 APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY//KVANTOVAYA ELEKTRONIKA//OPTICS COMMUNICATIONS
9 2928 FILAMENTATION//INT LASER//OPT PHOTON LASER
10 5806 FREQUENCY COMB//OPTICAL FREQUENCY COMB//OPTICAL FREQUENCY METROLOGY

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