Liquid jet waveguide for Raman spectroscopy

Gianluca Persichetti; Genni Testa; Romeo Bernini

doi:10.1117/12.2039930

6 March 2014 Liquid jet waveguide for Raman spectroscopy

Gianluca Persichetti, Genni Testa, Romeo Bernini

Proceedings Volume 8976, Microfluidics, BioMEMS, and Medical Microsystems XII; 897612 (2014) https://doi.org/10.1117/12.2039930
Event: SPIE MOEMS-MEMS, 2014, San Francisco, California, United States

Abstract

An optofluidic jet waveguide for Raman spectroscopy is reported. In this device a micro-channel is used to produce a high speed liquid stream acting at the same time, as the solution to analyse and as an optical waveguide. The liquid waveguide, exploiting total internal reflection, is able to effectively collect the Raman signal produced by the chemical compound under analysis opportunely excited by means of a laser source. Using a self-aligned configuration, the liquid jet is directly coupled with a multimode optical fiber collecting the Raman signal towards the detection system. The waveguiding nature of a liquid jet enables high Raman signal collection and the device configuration allows strong reduction of the background as no confining walls are used to contain the solution to analyse. The performances of the system have been successfully tested on isopropyl alcohol in water solutions showing a detection limit for this chemical compound of 0.8±0.1%.

Citation Download Citation

Gianluca Persichetti, Genni Testa, and Romeo Bernini "Liquid jet waveguide for Raman spectroscopy", Proc. SPIE 8976, Microfluidics, BioMEMS, and Medical Microsystems XII, 897612 (6 March 2014); https://doi.org/10.1117/12.2039930

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available