Title :
Enhancement of signal to noise in mid-IR photothermal spectroscopy by optimization of fiber probe lasers
Author :
Totachawattana, Atcha ; Liu, Hui ; Erramilli, Shyamsunder ; Sander, Michelle Y.
Author_Institution :
Dept. of Electr. & Comput. Eng., Boston Univ., Boston, MA, USA
Abstract :
Continuous-wave and mode-locked fiber lasers are incorporated into label-free mid-IR photothermal spectroscopy. Optimization of probe laser parameters leads to significant enhancement in the signal to noise ratio and the peak-to-baseline contrast.
Keywords :
fibre lasers; infrared spectra; laser mode locking; laser noise; optimisation; photothermal spectroscopy; continuous-wave fiber lasers; fiber probe laser optimization; label-free mid-IR photothermal spectroscopy; mode-locked fiber lasers; signal-to-noise enhancement; Laser excitation; Optical fiber amplifiers; Probes; Quantum cascade lasers; Signal to noise ratio; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
