Raman performance characteristics of Teflon®-AF 2400 liquid-core optical-fiber sample cells

被引：55

作者：

Altkorn, R

Koev, I

Pelletier, MJ

机构：

[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60201 USA

[2] Biogen Inc, San Diego, CA 92121 USA

[3] Kaiser Opt Syst Inc, Ann Arbor, MI 48103 USA

来源：

APPLIED SPECTROSCOPY | 1999年 / 53卷 / 10期

关键词：

Raman spectroscopy; Teflon-AF; liquid-core optical fiber; waveguide capillary cell; liquid-core waveguide;

D O I：

10.1366/0003702991945560

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Several properties of Teflon(R)-AF liquid-core optical-fiber (LCOF) sample cells relevant to their utility in analytical Raman spectroscopy have been investigated, These include the nature and extent of cladding-related background and its effect on signal-to-noise ratio, and the dependence of intensity enhancement on LCOF length, core diameter, excitation wavelength, and scattering wavelength, Significant improvements in signal-to-noise ratio relative to conventional sampling techniques were demonstrated in LCOFs filled with dilute (6 x 10(-2) M and 6 x 10(-4) M) aqueous solutions of phenylalanine, A maximum intensity enhancement factor of approximately 120 was measured by using 50 mu m i.d. LCOFs filled with methanol and 532 nm excitation. Enhancement in 785 nm-excited spectra was found to vary with Raman shift in a manner consistent with self-absorption by high-overtone vibrational bands in the core liquid.

引用

页码：1169 / 1176

页数：8

共 52 条

[1] Low-loss liquid-core optical fiber for low-refractive-index liquids: fabrication, characterization, and application in Raman spectroscopy [J].

Altkorn, R ;

Koev, I ;

VanDuyne, RP ;

Litorja, M .

APPLIED OPTICS, 1997, 36 (34) :8992-8998

[2] Waveguide capillary cell for low-refractive-index liquids [J].

Altkorn, R ;

Koev, I ;

Gottlieb, A .

APPLIED SPECTROSCOPY, 1997, 51 (10) :1554-1558

[3]

ALTKORN R, 1997, J NEAR INFRARED SPEC, V5, P35

[4]

Battey D. E., 1996, US Patent, Patent No. [5,559,597, 5559597]

[5] AXIAL TRANSMISSIVE F/1.8 IMAGING RAMAN SPECTROGRAPH WITH VOLUME-PHASE HOLOGRAPHIC FILTER AND GRATING [J].

BATTEY, DE ;

SLATER, JB ;

WLUDYKA, R ;

OWEN, H ;

PALLISTER, DM ;

MORRIS, MD .

APPLIED SPECTROSCOPY, 1993, 47 (11) :1913-1919

[6]

Bonano A.S., 1993, J NEAR INFRARED SPEC, V1, P13

[7] REFLECTION LOSSES IN POLYSTYRENE FIBERS [J].

DAMBROSIO, C ;

LEUTZ, H ;

TAUFER, M ;

SHIMIZU, T ;

SHINJI, O ;

SUN, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1991, 306 (03) :549-556

[8] High-sensitivity gas sensors based on gas-permeable liquid core waveguides and long-path absorbance detection [J].

Dasgupta, PK ;

Genfa, Z ;

Poruthoor, SK ;

Caldwell, S ;

Dong, S ;

Liu, SY .

ANALYTICAL CHEMISTRY, 1998, 70 (22) :4661-4669

[9]

DIVITA P, 1976, APPL OPTICS, V15, P2765, DOI 10.1364/AO.15.002765

[10] A cylindrical liquid-core waveguide [J].

Dress, P ;

Franke, H .

APPLIED PHYSICS B-LASERS AND OPTICS, 1996, 63 (01) :12-19

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