Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Garching
Verein zur Förderung des Walter-Schottky-Inst. der Techn. Univ. München
2011
|
| Ausgabe: | 1. Aufl. |
| Schriftenreihe: | Selected topics of semiconductor physics and technology
Vol. 130 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | IV, 150 S. Ill., graph. Darst. 21 cm |
| ISBN: | 9783941650305 |
Internformat
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| 245 | 1 | 0 | |a Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers |c Jia Chen |
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| 264 | 1 | |a Garching |b Verein zur Förderung des Walter-Schottky-Inst. der Techn. Univ. München |c 2011 | |
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Datensatz im Suchindex
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|---|---|
| adam_text | IMAGE 1
CONTENTS
1 INTRODUCTION 1
2 ANALYSIS OF THE REQUIREMENTS FOR DEVELOPMENT OF AN OPTICAL GAS
DETECTOR 3
3 FUNDAMENTALS 7
3.1 ABSORPTION BY MOLECULES 8
3.1.1 ENERGY TRANSITIONS OF MOLECULES 8
3.1.2 LAMBERT-BEER LAW 11
3.1.3 ABSORPTION LINE WIDTH AND ABSORPTION LINE PROFILE 12
3.2 TUNABLE DIODE LASER ABSORPTION SPECTROSCOPY 15
3.2.1 DIRECT SPECTROSCOPY 15
3.2.2 WAVELENGTH MODULATION SPECTROSCOPY 16
3.3 SINGLE-MODE SEMICONDUCTOR TUNABLE LASERS 18
3.3.1 VCSEL AND DFB 18
3.3.2 WAVELENGTH RANGE AND MATERIAL SYSTEM 19
4 VCSEL CHARACTERIZATION 21
4.1 STATIC TUNING BEHAVIOR 22
4.2 DYNAMIC TUNING BEHAVIOR 23
4.2.1 ACCURATE MEASUREMENT METHOD 23
4.2.2 EXPERIMENTAL RESULTS 28
4.2.3 THEORETICAL MODEL 30
4.2.4 HIGH-SPEED WAVELENGTH TUNING 34
4.3 GAS SENSING LIMITATIONS BY THE LASER DIODE 35
4.3.1 INP-BASED LASER AT 1680 NM 35
4.3.2 GASB-BASED LASER AT 2330 NM 36
4.4 CONCLUSION 39
5 OPTICAL GAS CELL 41
5.1 THEORY OF THE OPTICAL CELL 42
5.2 REQUIREMENTS ON THE DESIGN OF THE OPTICAL CELL 44
5.3 CELL SPECTRAL BACKGROUND 44
5.3.1 ORIGIN OF THE SPECTRAL BACKGROUND 44
5.3.2 CELL BACKGROUND ON THE SECOND HARMONIC SPECTRUM 47 5.3.3
CHARACTERIZATION METHOD OF THE SPECTRAL BACKGROUND 48 5.4
SINGLE-REFLECTIVE CELL: DIFFUSE REFLECTOR 49
5.4.1 THERMAL CYCLES 49
5.4.2 CELL SPECTRAL BACKGROUND 50
5.4.3 CONTAMINATION AND CONDENSATION NOISE IN FURNACES 51 5.5 MULTIPASS
CELL: HERRIOTT CELL AND WHITE CELL 53
5.6 PHOTONIC CRYSTAL FIBER BASED CELLS 55
5.6.1 FIBER PROPERTIES 55
5.6.2 OPTICAL SETUP 56
BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/1014150973
DIGITALISIERT DURCH
IMAGE 2
5.6.3 CELL INTERACTION LENGTH 56
5.6.4 CELL SPECTRAL BACKGROUND 58
5.6.5 MAXIMUM INTERACTION LENGTH AND GAS EXCHANGING TIME 59 5.6.6
RESULTS ON OTHER PCFS 60
5.7 HOLLOW CAPILLARY FIBER BASED CELL 61
5.7.1 FIBER PROPERTIES 62
5.7.2 MAXIMUM INTERACTION LENGTH 63
5.7.3 CELL SPECTRAL BACKGROUND 63
5.7.4 ANALYSIS OF SPECTRAL BACKGROUND AND ITS IMPROVEMENT 64 5.8
COMPARISON AND CONCLUSION 72
6 SIGNAL PROCESSING: EXTRACTION OF GAS PARAMETERS 75
6.1 SIGNAL MODEL AND CURVE FIT 78
6.1.1 LINEAR AND NONLINEAR MODEL FUNCTION 78
6.1.2 SIGNAL MODEL FOR WAVELENGTH MODULATION SPECTROSCOPY BASED SYSTEM
80 6.1.3 LINEAR FORM OF THE SIGNAL MODEL AND ITS CLOSED FORM SOLUTION .
.. 85 6.2 HEURISTIC PARAMETER ESTIMATION 87
6.2.1 ISOLATED LINE MODEL: HEURISTIC PARAMETER DETERMINATION 88 6.2.2
MULTI-LINE MODEL: HEURISTIC PATTERN RECOGNITION 91
6.2.3 COMPARISON OF MULTI-LINE AND SINGLE-LINE MODEL 94
6.3 OPTIMUM SPECTRAL SAMPLING 95
6.3.1 OPTIMUM LINEAR SCANNING WIDTH 96
6.3.2 OPTIMAL NONLINEAR WAVELENGTH SCANNING AND SPECTRUM WAVEFORM 97
6.3.3 COMPARISON BETWEEN LINEAR AND NONLINEAR WAVELENGTH SCANNING . 101
6.4 POST CURVE FIT KAIMAN FILTERING 102
6.5 CONCLUSION 105
7 PRACTICAL SENSOR REALIZATION 107
7.1 INTRODUCTION 107
7.2 OXYGEN SENSOR FOR COMBUSTION OPTIMIZATION IN FURNACE 107
7.2.1 MOTIVATION 107
7.2.2 DESIGN OF SENSOR OPTICS 109
7.2.3 DESIGN OF SPECTRAL EVALUATION ALGORITHM 110
7.2.4 SENSOR PERFORMANCE: CONCENTRATION AND PRESSURE MEASUREMENT . . 112
7.3 CARBON MONOXIDE SENSOR 115
7.3.1 DESIGN OF SENSOR OPTICS 116
7.3.2 DESIGN OF SPECTRAL EVALUATION ALGORITHM: WIDE/NARROW SCAN . . .
117 7.3.3 SENSOR PERFORMANCE AND APPLICATION RESULTS 119
7.4 FIBER-BASED CARBON MONOXIDE SENSOR 121
7.4.1 DESIGN OF SENSOR OPTICAL CELL 121
7.4.2 SENSOR PERFORMANCE AND APPLICATION RESULTS 123
7.5 CONCLUSION 125
8 CONCLUSION AND OUTLOOK 127
ABBREVIATIONS AND SYMBOLS 131
BIBLIOGRAPHY 135
PUBLICATIONS 147
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| any_adam_object | 1 |
| author | Chen, Jia |
| author_facet | Chen, Jia |
| author_role | aut |
| author_sort | Chen, Jia |
| author_variant | j c jc |
| building | Verbundindex |
| bvnumber | BV039532652 |
| ctrlnum | (OCoLC)750864456 (DE-599)DNB1014150973 |
| dewey-full | 535.2 |
| dewey-hundreds | 500 - Natural sciences and mathematics |
| dewey-ones | 535 - Light and related radiation |
| dewey-raw | 535.2 |
| dewey-search | 535.2 |
| dewey-sort | 3535.2 |
| dewey-tens | 530 - Physics |
| discipline | Physik |
| edition | 1. Aufl. |
| format | Thesis Book |
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| illustrated | Illustrated |
| indexdate | 2024-07-10T00:05:39Z |
| institution | BVB |
| isbn | 9783941650305 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-024384903 |
| oclc_num | 750864456 |
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| owner_facet | DE-12 DE-91 DE-BY-TUM |
| physical | IV, 150 S. Ill., graph. Darst. 21 cm |
| publishDate | 2011 |
| publishDateSearch | 2011 |
| publishDateSort | 2011 |
| publisher | Verein zur Förderung des Walter-Schottky-Inst. der Techn. Univ. München |
| record_format | marc |
| series | Selected topics of semiconductor physics and technology |
| series2 | Selected topics of semiconductor physics and technology |
| spelling | Chen, Jia Verfasser aut Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers Jia Chen 1. Aufl. Garching Verein zur Förderung des Walter-Schottky-Inst. der Techn. Univ. München 2011 IV, 150 S. Ill., graph. Darst. 21 cm txt rdacontent n rdamedia nc rdacarrier Selected topics of semiconductor physics and technology Vol. 130 Zugl.: München, Techn. Univ., Diss., 2010 (DE-588)4113937-9 Hochschulschrift gnd-content Selected topics of semiconductor physics and technology Vol. 130 (DE-604)BV011499438 130 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024384903&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Chen, Jia Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers Selected topics of semiconductor physics and technology |
| subject_GND | (DE-588)4113937-9 |
| title | Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers |
| title_auth | Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers |
| title_exact_search | Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers |
| title_full | Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers Jia Chen |
| title_fullStr | Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers Jia Chen |
| title_full_unstemmed | Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers Jia Chen |
| title_short | Compact laser-spectroscopic gas sensors using vertical-cavity surface-emitting lasers |
| title_sort | compact laser spectroscopic gas sensors using vertical cavity surface emitting lasers |
| topic_facet | Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024384903&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV011499438 |
| work_keys_str_mv | AT chenjia compactlaserspectroscopicgassensorsusingverticalcavitysurfaceemittinglasers |