Improvement of an optical fiber sensor for the detection of low concentrations of solutes using the photothermal effect

S. Alvarado; E. Marín; A. Calderón; A. Marcano

doi:10.1016/j.tca.2014.08.012

Improvement of an optical fiber sensor for the detection of low concentrations of solutes using the photothermal effect

S. Alvarado, E. Marín, A. Calderón, A. Marcano

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We report on the use of an optical fiber sensor for the determination of concentration of contaminants in solutions below the micromolar level based on the photothermal lens effect. A pump laser beam has been added to a conventional configuration widely used as refractometer, so that the device is improved to detect tiny changes of the refractive index of a sample related to the amount of heat generated following optical absorption. In this way, concentrations as low as 0.1 μM of methylene blue in distilled water were measured. A simple experiment is also performed to demonstrate the photothermal effect.

Original language	English
Pages (from-to)	12-15
Number of pages	4
Journal	Thermochimica Acta
Volume	593
DOIs	https://doi.org/10.1016/j.tca.2014.08.012
State	Published - 10 Oct 2014
Externally published	Yes

Keywords

Fiber optic sensor
Photothermal
Refractive index
Thermal lens

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10.1016/j.tca.2014.08.012

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title = "Improvement of an optical fiber sensor for the detection of low concentrations of solutes using the photothermal effect",

abstract = "We report on the use of an optical fiber sensor for the determination of concentration of contaminants in solutions below the micromolar level based on the photothermal lens effect. A pump laser beam has been added to a conventional configuration widely used as refractometer, so that the device is improved to detect tiny changes of the refractive index of a sample related to the amount of heat generated following optical absorption. In this way, concentrations as low as 0.1 μM of methylene blue in distilled water were measured. A simple experiment is also performed to demonstrate the photothermal effect.",

keywords = "Fiber optic sensor, Photothermal, Refractive index, Thermal lens",

author = "S. Alvarado and E. Mar{\'i}n and A. Calder{\'o}n and A. Marcano",

note = "Funding Information: This work was financially partially supported by research grant SIP-IPN (Mex) 1638 , CONACyT (Mex) 205640 and NSF Award (USA) 1156640 . The supports from COFAA-IPN (Mex) through the SIBE and PIFI Programs are also acknowledged.",

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doi = "10.1016/j.tca.2014.08.012",

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T1 - Improvement of an optical fiber sensor for the detection of low concentrations of solutes using the photothermal effect

AU - Alvarado, S.

AU - Marín, E.

AU - Calderón, A.

AU - Marcano, A.

N1 - Funding Information: This work was financially partially supported by research grant SIP-IPN (Mex) 1638 , CONACyT (Mex) 205640 and NSF Award (USA) 1156640 . The supports from COFAA-IPN (Mex) through the SIBE and PIFI Programs are also acknowledged.

PY - 2014/10/10

Y1 - 2014/10/10

N2 - We report on the use of an optical fiber sensor for the determination of concentration of contaminants in solutions below the micromolar level based on the photothermal lens effect. A pump laser beam has been added to a conventional configuration widely used as refractometer, so that the device is improved to detect tiny changes of the refractive index of a sample related to the amount of heat generated following optical absorption. In this way, concentrations as low as 0.1 μM of methylene blue in distilled water were measured. A simple experiment is also performed to demonstrate the photothermal effect.

AB - We report on the use of an optical fiber sensor for the determination of concentration of contaminants in solutions below the micromolar level based on the photothermal lens effect. A pump laser beam has been added to a conventional configuration widely used as refractometer, so that the device is improved to detect tiny changes of the refractive index of a sample related to the amount of heat generated following optical absorption. In this way, concentrations as low as 0.1 μM of methylene blue in distilled water were measured. A simple experiment is also performed to demonstrate the photothermal effect.

KW - Fiber optic sensor

KW - Photothermal

KW - Refractive index

KW - Thermal lens

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U2 - 10.1016/j.tca.2014.08.012

DO - 10.1016/j.tca.2014.08.012

M3 - Artículo

SN - 0040-6031

VL - 593

SP - 12

EP - 15

JO - Thermochimica Acta

JF - Thermochimica Acta

ER -

Improvement of an optical fiber sensor for the detection of low concentrations of solutes using the photothermal effect

Abstract

Keywords

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