Class information for:
Level 2: QUANTUM CASCADE LASERS//QUANTUM CASCADE LASER//QUANTUM CASCADE LASERS QCLS

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
1559 6761 21.4 70%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 3)


ID, lev.
above		 Publications Label for level above
659 6761 QUANTUM CASCADE LASERS//QUANTUM CASCADE LASER//QUANTUM CASCADE LASERS QCLS

Classes in level below (level 1)


ID, lev. below Publications Label for level below
1783 2416 QUANTUM CASCADE LASERS//QUANTUM CASCADE LASERS QCLS//QUANTUM CASCADE LASER
2690 2099 HIGH TEMP GASDYNAM//WAVELENGTH MODULATION SPECTROSCOPY//WAVELENGTH MODULATION
12524 837 CAVITY RING DOWN CRD//INCOHERENT BROADBAND CAVITY ENHANCED ABSORPTION SPECTROSCOPY//CAVITY RINGDOWN
12970 805 CNR IFN UOS BARI//PHOTOACOUSTIC SPECTROSCOPY//LASER PHOTOACOUSTIC SPECTROSCOPY
21564 356 INTRACAVITY ABSORPTION//TIANJIN BIOMED DETECT RUMENTS//INTRA CAVITY SPECTROSCOPY
30806 132 THREE DIMENSIONAL IRREGULARITY//STATISTICAL IRREGULARITIES//WAVEGUIDE SCATTERING PROBLEMS
31888 116 COLLISION BROADENING COEFFICIENTS//INTENSITY STABILITY//UP A CNRS D1434

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 QUANTUM CASCADE LASERS Author keyword 160 50% 3% 232
2 QUANTUM CASCADE LASER Author keyword 83 34% 3% 202
3 QUANTUM CASCADE LASERS QCLS Author keyword 76 88% 1% 36
4 1123 Address 51 91% 0% 21
5 HIGH TEMP GASDYNAM Address 50 43% 1% 89
6 WAVELENGTH MODULATION Author keyword 41 47% 1% 64
7 MICRO NANOSTRUCT Address 40 46% 1% 64
8 UNIPOLAR SEMICONDUCTOR LASER Author keyword 38 93% 0% 14
9 WAVELENGTH MODULATION SPECTROSCOPY Author keyword 33 52% 1% 45
10 QUANTUM CASCADE QC LASER Author keyword 32 85% 0% 17

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 QUANTUM CASCADE LASERS 160 50% 3% 232 Search QUANTUM+CASCADE+LASERS Search QUANTUM+CASCADE+LASERS
2 QUANTUM CASCADE LASER 83 34% 3% 202 Search QUANTUM+CASCADE+LASER Search QUANTUM+CASCADE+LASER
3 QUANTUM CASCADE LASERS QCLS 76 88% 1% 36 Search QUANTUM+CASCADE+LASERS+QCLS Search QUANTUM+CASCADE+LASERS+QCLS
4 WAVELENGTH MODULATION 41 47% 1% 64 Search WAVELENGTH+MODULATION Search WAVELENGTH+MODULATION
5 UNIPOLAR SEMICONDUCTOR LASER 38 93% 0% 14 Search UNIPOLAR+SEMICONDUCTOR+LASER Search UNIPOLAR+SEMICONDUCTOR+LASER
6 WAVELENGTH MODULATION SPECTROSCOPY 33 52% 1% 45 Search WAVELENGTH+MODULATION+SPECTROSCOPY Search WAVELENGTH+MODULATION+SPECTROSCOPY
7 QUANTUM CASCADE QC LASER 32 85% 0% 17 Search QUANTUM+CASCADE+QC+LASER Search QUANTUM+CASCADE+QC+LASER
8 TUNABLE DIODE LASER ABSORPTION SPECTROSCOPY 28 49% 1% 41 Search TUNABLE+DIODE+LASER+ABSORPTION+SPECTROSCOPY Search TUNABLE+DIODE+LASER+ABSORPTION+SPECTROSCOPY
9 SUBMILLIMETRE WAVE LASERS 27 83% 0% 15 Search SUBMILLIMETRE+WAVE+LASERS Search SUBMILLIMETRE+WAVE+LASERS
10 QUANTUM CASCADE LASER QCL 21 61% 0% 22 Search QUANTUM+CASCADE+LASER+QCL Search QUANTUM+CASCADE+LASER+QCL

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 DOWN SPECTROSCOPY 129 62% 2% 132
2 QUANTUM CASCADE LASER 104 39% 3% 209
3 WAVELENGTH MODULATION SPECTROSCOPY 96 73% 1% 73
4 QUANTUM CASCADE LASERS 81 31% 3% 215
5 TRACE GAS DETECTION 77 57% 1% 90
6 BACKGROUND SIGNALS 62 85% 0% 33
7 LIMITED FM SPECTROSCOPY 53 89% 0% 24
8 RING DOWN SPECTROSCOPY 52 28% 2% 155
9 BOUND TO CONTINUUM 48 77% 0% 33
10 CONTINUOUS WAVE OPERATION 45 22% 3% 187

Journals

Reviews


Title Publ. year Cit. Active references % act. ref.
to same field
Terahertz quantum-cascade lasers 2007 600 92 78%
Mid-infrared quantum cascade lasers 2012 101 108 99%
Quantum cascade lasers in chemical physics 2010 196 120 90%
Optical gas sensing: a review 2013 75 317 62%
Quartz-Enhanced Photoacoustic Spectroscopy: A Review 2014 22 74 78%
Broadly tunable single-mode mid-infrared quantum cascade lasers 2015 2 143 91%
Cavity ring-down spectroscopy: Experimental schemes and applications 2000 547 168 50%
Recent progress in quantum cascade lasers and applications 2001 421 139 70%
Wave engineering with THz quantum cascade lasers 2013 24 92 78%
External cavity quantum cascade laser 2010 77 54 81%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 1123 51 91% 0.3% 21
2 HIGH TEMP GASDYNAM 50 43% 1.3% 89
3 MICRO NANOSTRUCT 40 46% 0.9% 64
4 LASER SPECT ENVIRONM SENSING 20 100% 0.1% 9
5 PHYSICOCHIM ATMOSPHERE 19 31% 0.7% 50
6 QUANTUM DEVICES 17 21% 1.1% 72
7 ANHUI OPT FINE MECH 15 10% 2.1% 139
8 CNR IFN UOS BARI 15 88% 0.1% 7
9 MICROWAVES PHOTON 14 20% 0.9% 62
10 EMMY NOETHER GRP MODELING QUANTUM CASCADE DEV 14 100% 0.1% 7

Related classes at same level (level 2)


Rank Relatedness score Related classes
1 0.0000013132 JOURNAL OF MOLECULAR SPECTROSCOPY//SPECT MOL//THEORET SPECT
2 0.0000012807 QUASI PHASE MATCHING//VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASER VECSEL//DOMAIN KINETICS
3 0.0000011475 GAINNAS//DILUTE NITRIDES//ANTIMONIDES
4 0.0000008882 MICROSYST IMICRO//MULTIPHONON RECOMBINATION//INFORMAT OPT TECHNOL
5 0.0000008846 SUPERLATTICES AND MICROSTRUCTURES//HYDROGENIC IMPURITY//QUANTUM WELL WIRES
6 0.0000008337 ELECTROMAGNETICALLY INDUCED TRANSPARENCY//SPONTANEOUSLY GENERATED COHERENCE//TIME FREQUENCY
7 0.0000008283 ESCAPE FACTOR//VOIGT FUNCTION//PLASMA DISPERSION FUNCTION
8 0.0000007511 WARM CARRIER DEVICE//INFRARED ANTENNA//ANTENNA COUPLED DETECTORS
9 0.0000007150 EXHALED BREATH CONDENSATE//EXHALED NITRIC OXIDE//JOURNAL OF BREATH RESEARCH
10 0.0000006329 PHYS BIOL ULTRAFAST SCI TECHNOL//TERAHERTZ//TERAHERTZ TIME DOMAIN SPECTROSCOPY