Application of interferometric continuous-dilution differential refractometry to some solutions, including isotopomer solutions: isotope effects on polarizability in liquids

Characterization of self-phase modulation in liquid filled hollow core photonic bandgap fibers

“…We choose to operate with a commercial hollow core photonic bandgap fiber [5] (HC-1550-02 from Crystal Fiber) filled with deuterated acetone (acetone-d6). When the fiber is filled with a liquid with the index of refraction of acetone-d6 (around 1.35) [25,26], the transmission band of the fiber around 1550 nm is shifted toward 800 nm [27]. Experimentally, the entire spectral range of the Ti:sapphire laser is covered as shown in Fig.…”

“…The additional losses due to overtones of infrared absorption bands of acetone are eliminated by deuteration, giving a full transmission band for the acetone-d6 filled fiber. The shift of the lower edge of the transmission band of the fiber filled with acetone-d6 is due to the slightly lower index of acetone-d6 compared to nondeuterated acetone [25]. The black dots show the measured variation of the group index of the fiber, from which the dispersion is deduced.…”

The correlation of excess molar refraction and excess volume for some binary solutions; a new approach

“…To minimize the first error, it is advisable to use Dn¯( from c.d.d.r. measurements (11,27) because of the higher precision of that technique.…”

“…While we neither expect nor observe an accurate one-to-one correspondence between RI and volume-derived ratios, we do expect, and do observe, a correlation accurate to within a few per cent. Some of the scatter is connected to uncertainties in the dispersion parameters used in the calculation (columns 2 and 3, (27) are compared with r ii,MV . Again, the agreement is within a few per cent or so, sometimes better.…”

“…These include A and n¯( 2 , obtained from dispersion fits {equation (2a)} of tabulated RI data (1) (or, if available, from higher-precision differential RI data), (27) and the distance parameters, r ii . The initial estimate of r ii was obtained from liquid-phase molar volume data, r ii 1 r MV = (V°i /N A ) 1/3 ; values of r MV are given in table 2.…”