Measuring femetosecond laser pulse duration with FROG
Project Description

FROG measurement stands for Frequency-resolved optical gating, a cutting-edge technique for precise characterization of ultrafast laser pulses on the time scale of femtosecond; that is, one billionth of one millionth of a second. Participating students are expected to implement a homemade instrument for FROG measurement in the visible and near-IR spectral. Key steps includes: 1. selection of proper nonlinear crystal; 2. optical alignment with high spatial and temporal precision; 3. two-dimentional data acquisition; 4. retrieval of amplitude and phase of ultrafast laser pulse.

Supervisor
ZHANG Jingdi
Quota
3
Course type
UROP1000
UROP1100
UROP2100
UROP3100
UROP4100
Applicant's Roles

UROP participants will work independently or interdependently with a fellow UROP student, under the supervision of UROP advisor.

Applicant's Learning Objectives

(i) Gain knowledge on principle of ultrafast lasers and nonlinear optics
(ii) Acquire basic skills for ultrafast laser alignment by building FROG assembly.
(iii) Use Labview to program instruments (motorized precision stage, spectrometer and DAQ) for data acquisition.
(iv) Apply retrieval algorithms for characterization of femtosecond pulse with FROG data

Complexity of the project
Moderate