Sample interview questions: Can you discuss any experience you have with experimental optics or ultrafast laser physics?
Sample answer:
During my doctoral research, I designed and constructed an ultrafast laser system capable of generating femtosecond pulses with sub-100 fs duration. This system utilized a regeneratively amplified Ti:sapphire laser followed by a series of nonlinear optics for pulse shaping and compression.
I employed this laser system to investigate the ultrafast dynamics of photoexcited carriers in semiconductor quantum wells using time-resolved pump-probe spectroscopy. I developed experimental setups to measure both transient absorption and photoluminescence with sub-picosecond temporal resolution.
My research findings revealed the interplay between carrier-carrier scattering, phonon-carrier interaction, and exciton formation in these systems. I demonstrated the influence of quantum confinement on the ultrafast carrier dyna… Read full answer