Etalon

II serait done ainsi facile d obtenir en temps reel sur ordinateur, I image d un defaut standard long qui est a meme de produire la variation d impedanee observee. II serait ainsi possible de realiser le controle par des mesures absolues et d eviter le recours a des defauts etalons. 

Here, the wavelength of the laser light is A, and is a correction term due to the wavelength dependence of the refractive index of the etalon material ( = 0.034 at 514.5 nm when fused silica etalons are used to achieve the necessary delay, or = 0 when a lens combination is used). The optical correction term Av/v results from the change in refractive index of the window material with shock stress (Barker and Hollenbach, 1970). If the measure-... 

In order to avoid defining the constant, relative measurements are usually applied for at least two materials, A and B, one of which is used as an etalon. In this case, if material A is an etalon, the spontaneous polarization of material B can be calculated using the following equation ... 

Figure 4. Fabry-Perot interference (a) Fabry-Perot etalon, (b) Fabry-Perot fringes, (c) Etalon transmission function for different plate transmissions.

Note that for high reflectivities R, the transmission of the etalon varies from 1 to T /4. The higher the reflectivity R, the narrower the transmission peak and the higher the resolution of the etalon. Despite the finite reflectivities of the plates, interference means that the etalon is totally transparent at some combinations of wavelength and incident angle. 

Liang, W. Yang, L. Poon, J. K. Huang, Y. Vahala, K. J. Yariv, A., Transmission char acteristics of a Fabry Perot etalon microtoroid resonator coupled systems, Opt. Lett. 2006, 31, 510 512... 

Fabry-Perot cavity, 14 849, 850 Fabry-Perot etalons, 11 151, 152 Face-centered cube lattice, 8 114t Face-centered cubic (FCC) crystal structure in Ni-base alloys, 13 512 of spinel ferrites, 11 60 Facial makup, 7 846-847 Facial preparations, 7 842t Facial tridendate ligand, 7 578 Facihtated transport, 15 826-827 carrier, 15 845-846... 

Fiber drums, as industrial materials packaging, 18 9-10 Fiber dyebath, damage to, 9 169 Fiber etalons, 11 151, 152 Fiber extrusion, VDC copolymers in, 25 725, 727-728... 

Fabry Perot etalon Gallium arsenide crystal,... 

G. Beheim, Fibre-optic thermometer using semiconductor etalon sensor, Elec. Lett. 22(5), 238-239 (1986). 

EPE Eabry-Perot etalon LCTE liquid crystal tunable filter... 

Figure 24.8 Experimental schematic of the multiplexed diode-laser sensor system used to measure CO, CO2, CH4, and H2O absorption by sampling hot combustion gases 1 ECDL 1.49-1.58 pm 2 optical isolator 3 — fiber coupler 4 — 1x2 fiber splitter 5 — etalon 6 — InGaAs detector 7 — DEB 1.65 pm 8 — 2 x 1 fiber combiner 9 optical fiber 10 fiber pitch 11 — concave mirror 12 — multipass...

In this book, standard is used only in the sense of written standard and the term measurement standard or etalon (in French etalon )(see slide 36) is used to describe chemical or physical standards used for calibration purposes such as chemicals of established purity and their corresponding solutions of known concentration, UV filter, weights, etc. They are also called reference materials. 

This definition is also accompanied by notes. The first says that certified reference materials are a sub-class of measnrement standards (or etalons ). 

All CRMs He within the definition of measurement standards or etalons ... 

For the second task second harmonic generation by quartz has been proposed. The first procedure is to determine the relative intensity of SH compared with etalon, where the ratio of SH intensities is used for sorting. In the second procedure the laser source is working with a very high repetition rate and the number of pulses with SH intensity above a certain level is used as the separation criterion. Sorting using non-linear optics may be very effective, because... 

For TDL spectra we have in fact linearized the data by using simultaneously recorded Ge etalon fringes. For such spectra this is often an absolute necessity because of the dispersion variation in the recorded data. 

The joint gate function is centered around the frequency wo and the time to and acts as a filter on the bare signal /. As an example we shall consider the case when the spectral gate is given by the Fabri-Perot etalon [16] and the time gate is exponential,... 

CLAES Cryogenic Limb Array Etalon Spectrometer ST Temperature, N20, NO, N02, HNQ, CF2CI2, CFCIj, HC1, Oj, CIONO2, CO2, H20, and CH UARS (1991-1993)... 

Since its launch in 1991 the Upper Atmospheric Research Satellite (UARS) has circled the Earth in a low earth non sun-synchronous orbit. The UARS flew three infrared experiments. In addition to ISAMS (described above) the Cryogenic Limb Array Etalon Spectrometer (CLAES) and the Halogen Occultation Experiment (HALOE) make infrared measurements designed to yield information about stratospheric and tropospheric trace constituents. 

Roche, A.E. and J.B. Kumer (1989) Cryogenic Limb Array Etalon Spectrometer (CLAES). Society cf Photo-Optical Instrumentation and Engineering Proceedings 973 324-335. 

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