3 papers
physics.optics2019
Extraction of higher-order nonlinear electronic response to strong field excitation in solids using high harmonic generation
Seunghwoi Han, Lisa Ortmann, Hyunwoong Kim +9
State-of-the-art experiments employ strong ultrafast optical fields to study the nonlinear response of electrons in solids on an attosecond time-scale. Notably, a recent experiment…
physics.optics2019
Spectral Interference in High Harmonic Generation from Solids
Yong Woo Kim, Tian-Jiao Shao, Hyunwoong Kim +5
Various interference effects are known to exist in the process of high harmonic generation (HHG) both at the single atom and macroscopic levels. In particular, the quantum path dif…
physics.optics2019
Comb-rooted multi-channel synthesis of ultra-narrow optical frequencies of few Hz linewidth
Heesuk Jang, Byung Soo Kim, Byung Jae Chun +5
We report a multi-channel optical frequency synthesizer developed to generate extremely stable continuous wave lasers directly out of the optical comb of an Er-doped fiber oscillat…