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pro vyhledávání: '"Jes Henningsen"'
Autor:
Jes Henningsen
Publikováno v:
American Journal of Physics. 79:85-93
Experimental activities in the undergraduate physics curriculum often suffer from a lack of connection with the courses they are designed to support. This paper describes a set of experiments in laser physics based on a commercially available HeNe ga
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 109:2491-2510
The absorption spectrum of SO 2 has been studied with 2 MHz instrumental resolution in the wavenumber range 1315 – 1395 cm - 1 , using a difference frequency spectrometer based on diode lasers for the 1300 and 1550 nm telecom bands. Initially, Lore
Autor:
Jes Henningsen, Jan C. Petersen
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 54:783-786
Molecular vibration-rotation transitions in overtone or combination bands are well suited as absolute wavelength standards throughout the wavelength range used for optical communication. In this paper, we describe two different implementations. In th
Autor:
Jes Henningsen, Mitsuhiro Kusaba
Publikováno v:
Journal of Molecular Spectroscopy. 209:216-227
The ν 1 +ν 3 and the ν 1 +ν 2 +ν 4 1 +ν 5 −1 combination bands of 13 C 2 H 2 at 6521.9 and 6535.1 cm −1 , respectively, are studied with diode laser spectroscopy. Line center wavelengths have been determined with 0.00012-nm standard uncerta
Autor:
Jes Henningsen, Deng Guo-Yang
Publikováno v:
Acta Physico-Chimica Sinica. 15:764-768
Autor:
Ari Olafsson, Jes Henningsen
Publikováno v:
Physica Scripta. :94-99
Several systems are described which illustrate the use of spectroscopic techniques for environmental monitoring, and results are presented for field qualified NH3 monitors, based on CO2 lasers and on near infrared diode lasers. The feasibility of iso
Autor:
Jes Henningsen, Ari Olafsson
Publikováno v:
Infrared Physics & Technology. 36:309-319
Although early publications on the CO 2 waveguide laser reported tuning ranges close to and exceeding 1 GHz in individual laser lines, this potential has not been widely exploited for spectroscopy. In this paper we outline the difficulties which have
Publikováno v:
Journal of Molecular Spectroscopy. 167:131-155
The Fourier transform spectrum of the infrared CO stretch band of CH3OD has been recorded in the region 980-1100 cm−1, at a resolution of 0.004 cm−1. More than 1300 absorption lines belonging to (nτK) subbands with n = 0, K ranging from 0 to
Publikováno v:
Chemical Physics. 163:173-178
Kinetic cooling is studied through photoacoustic CO 2 laser monitoring on gas mixtures containing CO 2 in quantities typical of smoke. The photoacoustic response is recorded in the time domain as well as in the frequency domain, and results are given
Publikováno v:
Journal of Molecular Spectroscopy. 152:420-433
Photoacoustic absorption signatures have been obtained for ozone in 450-MHz tuning windows of a waveguide CO 2 laser. Out of 42 observed absorption lines, 31 are assigned to the ν 1 and the ν 3 bands, and 7 to various hot bands of 16 O 16 O 16 O. T