Atlas of the 12 Spectrum from 19 000 to 18 000 cm -1

Abstract

A line ide nti ficatio n band atlas is prese nt ed fo r a 1000 cm-I segment , from 19000 to IB 000 c m-I , of the molec ular iod ine absorption spectrum. Each page of the a tl as covers a 20 cm-I region of the spectrum and contains a CALCOM P prod uced photod e ns it ome ter trace of the spectrum together with accompanying tabular identifi cation data. Th e tabular data includes: line ide ntification numbe rs , o bserved wave numbers, calculated wave numbers, and rotationa l a lld vibra ti o na l assig nm e nt s .Key words: Hi gh-reso luti on spectrum ; iodine s pectrum; line ide ntificati on atlas; rovibroni c ass ignme nts; s pec tra l a na lysis; vis ible absorpti on s pec trosco py.

Background clean-up in Brillouin microspectroscopy of scattering medium

“…Unlike the 2-stage VIPA, the single-stage VIPA spectrometer has a higher transmission rate [14], making Stokes peak still visible at 120 °C. A dip in the anti-Stokes peak (marked by an arrow) is possibly induced by absorption line 662 of the iodine vapor as noted in [16]. Figure 4(b) shows the average signal along the horizontal direction in Fig.…”

“…Here, the wavelength of our pump laser coincides with absorption line 660 (18793.205 cm −1 ) as noted in [16]. In this way, the iodine vapor is optically thick for the elastically scattered photons, while optically transparent for Brillouin scattered photons in most cases.…”

“…Π 0u + , where the typical linewidth for a transition is less than 0.05 cm −1 (<1.5 GHz) [16], which is perfectly suitable for Brillouin spectroscopy. We note that the atomic/molecular absorption cells were first employed in Raman and Brillouin spectroscopy applications in the 1970s [17,18] and have been in use throughout the 1980s and 1990s.…”

Multiaxis interferometric displacement measurement for local probe microscopy

“…The operating optical frequency of the laser proved to be approximately 208 GHz away from the transition R(56) 32-0 cited in the recommendations of CIPM [29] 3 , which corresponds to the transition of iodine λ = 18780 884 −1 cited in [30].…”

Comparison of Molecular Iodine Spectral Properties at 514.7 and 532 nm Wavelengths

“…It covers a spectral range from the green to near IR band and has a lot of very strong and narrow components, especially in the region close to the dissociation limit [1][2][3][4]. Molecular iodine is commonly used for frequency stabilization of lasers and it is also recommended by CIPM committee as an absorption medium for frequency stabilization of laser standards of length for different wavelengths [5].…”