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Proceedings Paper • Open Access

Femtosecond-laser experiment for Master II students: generation, measurement and control of femtoseconds pulses
Author(s): Fréderic Druon; Tom Peyrot; Arthur Larrouy; Arnaud Courvoisier; Cédric Lejeune; Thierry Avignon

Paper Abstract

In the framework of the experiment platform LEnsE (Laboratoire d’Enseignement Expérimental) of the Institut d’Optique Graduate School in Palaiseau, we present a new lab work dedicated to Master-­‐II-­‐level students. This lab work is integrated in the formation in the field of ultrashort-­‐pulse lasers and its objective is to train students to this specific technology. The varied topics include generation, measurement and basic control of ultrashort pulses. Key concepts are studied, such as the time-­‐frequency duality, nonlinear effects, the group velocity dispersion (GVD) and more generally managing spectral and temporal phase. The lab work is based on a totally accessible Ti:sapphire laser (Mira 800 from Coherent). It is used to understand crucial concepts in the generation process such as GVD and self-­‐phase-­‐modulation in the solitonic regime and Kerr lens mode-­‐locking. Because the pulse measurement is a crucial issue to address in ultrafast optics, the lab work also studies different apparatus commonly used to fully characterize fs pulse train: photodiode, spectrometer, and more specifically second-­‐order autocorrelator. The autocorrelation concept is detailed using a homemade accessible apparatus. For a simple manipulation of femtosecond pulses, we propose to realize a spectral-­‐phase control with high-­‐dispersive glass to temporally stretch the pulses. GTI mirrors then re-­‐compress them. The three pillars generation-­‐measurement-­‐control will be described with a practical approach at the conference.

Paper Details

Date Published: 8 October 2015
PDF: 4 pages
Proc. SPIE 9793, Education and Training in Optics and Photonics: ETOP 2015, 97930T (8 October 2015); doi: 10.1117/12.2223086
Show Author Affiliations
Fréderic Druon, Institut d'Optique Graduate School (France)
Tom Peyrot, Institut d'Optique Graduate School (France)
Arthur Larrouy, Institut d'Optique Graduate School (France)
Arnaud Courvoisier, Institut d'Optique Graduate School (France)
Cédric Lejeune, Institut d'Optique Graduate School (France)
Thierry Avignon, Institut d'Optique Graduate School (France)

Published in SPIE Proceedings Vol. 9793:
Education and Training in Optics and Photonics: ETOP 2015

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