Abstract
Until recently, the generation of super-octave continua in bulk materials at full repetition rates of femtosecond (fs) oscillators has been limited to a few special cases of Kerr lens mode-locked Ti:sapphire lasers. In 2019, we described a 3.4-octave fs source with 50 nJ pulse energy at the repetition rate of 78 MHz based on polycrystalline Cr:ZnS [Vasilyev et al., Optica6, 126 (2019)]. Here we explain the mechanism of fs supercontinuum generation in transition-metal doped polycrystalline II-VI semiconductors at relatively low (nJ-level) pulse energy. We demonstrate that this new supercontinuum regime is enabled by a complex, yet well-reproducible, interplay between the effects arising from the third-order nonlinearity, the quadratic nonlinearities, and thermal optical effects in the medium. We also demonstrate the control of fs pulse propagation in disordered χ(2) media via the control of the material microstructure.
Original language | English (US) |
---|---|
Pages (from-to) | 1625-1633 |
Number of pages | 9 |
Journal | Journal of the Optical Society of America B: Optical Physics |
Volume | 38 |
Issue number | 5 |
DOIs | |
State | Published - May 1 2021 |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics
Fingerprint
Dive into the research topics of 'Low-threshold supercontinuum generation in polycrystalline media'. Together they form a unique fingerprint.Datasets
-
Low-threshold supercontinuum generation in bulk polycrystalline media
Vasilyev, S. (Creator), Gu, J. (Contributor), Mirov, M. (Creator), Barnakov, Y. (Creator), Moskalev, I. (Creator), Smolski, V. (Creator), Peppers, J. (Creator), Kolesik, M. (Creator), Mirov, S. (Creator) & Gapontsev, V. (Creator), The Optical Society, 2021
DOI: 10.6084/m9.figshare.c.5357723, https://osapublishing.figshare.com/collections/Low-threshold_supercontinuum_generation_in_bulk_polycrystalline_media/5357723
Dataset
-
Low-threshold supercontinuum generation in bulk polycrystalline media
Vasilyev, S. (Creator), Gu, J. (Contributor), Mirov, M. (Creator), Barnakov, Y. (Creator), Moskalev, I. (Creator), Smolski, V. (Creator), Peppers, J. (Creator), Kolesik, M. (Creator), Mirov, S. (Creator) & Gapontsev, V. (Creator), The Optical Society, 2021
DOI: 10.6084/m9.figshare.c.5357723.v2, https://osapublishing.figshare.com/collections/Low-threshold_supercontinuum_generation_in_bulk_polycrystalline_media/5357723/2
Dataset
-
Low-threshold supercontinuum generation in bulk polycrystalline media
Vasilyev, S. (Creator), Gu, J. (Contributor), Mirov, M. (Creator), Barnakov, Y. (Creator), Moskalev, I. (Creator), Smolski, V. (Creator), Peppers, J. (Creator), Kolesik, M. (Creator), Mirov, S. (Creator) & Gapontsev, V. (Creator), The Optical Society, 2021
DOI: 10.6084/m9.figshare.c.5357723.v1, https://osapublishing.figshare.com/collections/Low-threshold_supercontinuum_generation_in_bulk_polycrystalline_media/5357723/1
Dataset