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Titolo:
INJECTION-SEEDED OPTICAL PARAMETRIC OSCILLATOR FOR AIRBORNE WATER-VAPOR DIAL
Autore:
FIX A; WEISS V; EHRET G;
Indirizzi:
DLR,INST PHYS ATMOSPHARE D-82234 OBERPFAFFENHOFEN GERMANY
Titolo Testata:
Pure and applied optics
fascicolo: 4, volume: 7, anno: 1998,
pagine: 837 - 852
SICI:
0963-9659(1998)7:4<837:IOPOFA>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIFFERENTIAL ABSORPTION LIDAR; 720-NM WAVELENGTH REGION; LASER; SYSTEM; SHIFTS; AIR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
A. Fix et al., "INJECTION-SEEDED OPTICAL PARAMETRIC OSCILLATOR FOR AIRBORNE WATER-VAPOR DIAL", Pure and applied optics, 7(4), 1998, pp. 837-852

Abstract

Any detailed understanding of the role of water vapour in the global climate system requires precise measurements in the atmosphere with high temporal and spatial resolution. A technique that is appropriate todeliver these data is airborne differential absorption lidar (DIAL) applied in the near-infrared spectral range. In order to accurately determine atmospheric water vapour concentrations by means of the DIAL technique tunability and spectral properties of the lidar transmitter are very important. It is demonstrated that the spectral and energy requirements are achieved using optical parametric oscillators (OPOs) thatare line-narrowed by the technique of injection seeding with radiation from dye lasers or from laser diodes. When the OPO is unseeded its spectral width is broad enough to suffer only negligible absorption from the H2O absorption lines. Therefore, the unseeded OPO radiation can be used for off-line measurement, which simplifies the DIAL set-up significantly. In addition, the laser diodes were employed to measure line parameters of a selected H2O absorption line in the near-IR. Their precise determination is important in order to make accurate DIAL measurements.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 17:44:35