Low-dispersion low-loss dielectric gratings for efficient ultrafast laser pulse compression at high average powers
Abstract
All-dielectric gratings are ideal for high average power laser pulse compressors due to their low loss and high diffraction efficiencies. However, they have not been utilized in petawatt-class lasers with pulse durations below 100 fs due to a variety of challenges. We present a resonance-free design for low-dispersion (1480 lines/mm) diffraction gratings made of dielectric materials resistant to femtosecond laser damage (SiO2/HfO2). A 14 cm diameter sample was fabricated resulting in a mean diffraction efficiency of 99.1% at λ = 810 nm with high spatial uniformity using equipment which can produce gratings up to 1 m diagonal. The implementation of these gratings in the compression of 30 fs pulses in an out-of-plane geometry can result in compressor efficiencies approaching 95%. The measured laser absorption is 500× lower than current ultrafast petawatt-class compressor gratings enabling a substantial increase in average power handling capabilities of these laser systems.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1547456
- Alternate Identifier(s):
- OSTI ID: 1734599
- Report Number(s):
- LLNL-JRNL-734080
Journal ID: ISSN 0030-3992; S0030399218320218; PII: S0030399218320218
- Grant/Contract Number:
- AC52-07NA27344; 14-ERD-084
- Resource Type:
- Published Article
- Journal Name:
- Optics and Laser Technology
- Additional Journal Information:
- Journal Name: Optics and Laser Technology Journal Volume: 117 Journal Issue: C; Journal ID: ISSN 0030-3992
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; diffraction gratings; pulse compression; ultrafast lasers; lasers and laser optics
Citation Formats
Alessi, David A., Nguyen, Hoang T., Britten, Jerald A., Rosso, Paul A., and Haefner, Constantin. Low-dispersion low-loss dielectric gratings for efficient ultrafast laser pulse compression at high average powers. United Kingdom: N. p., 2019.
Web. doi:10.1016/j.optlastec.2019.04.005.
Alessi, David A., Nguyen, Hoang T., Britten, Jerald A., Rosso, Paul A., & Haefner, Constantin. Low-dispersion low-loss dielectric gratings for efficient ultrafast laser pulse compression at high average powers. United Kingdom. https://doi.org/10.1016/j.optlastec.2019.04.005
Alessi, David A., Nguyen, Hoang T., Britten, Jerald A., Rosso, Paul A., and Haefner, Constantin. Sun .
"Low-dispersion low-loss dielectric gratings for efficient ultrafast laser pulse compression at high average powers". United Kingdom. https://doi.org/10.1016/j.optlastec.2019.04.005.
@article{osti_1547456,
title = {Low-dispersion low-loss dielectric gratings for efficient ultrafast laser pulse compression at high average powers},
author = {Alessi, David A. and Nguyen, Hoang T. and Britten, Jerald A. and Rosso, Paul A. and Haefner, Constantin},
abstractNote = {All-dielectric gratings are ideal for high average power laser pulse compressors due to their low loss and high diffraction efficiencies. However, they have not been utilized in petawatt-class lasers with pulse durations below 100 fs due to a variety of challenges. We present a resonance-free design for low-dispersion (1480 lines/mm) diffraction gratings made of dielectric materials resistant to femtosecond laser damage (SiO2/HfO2). A 14 cm diameter sample was fabricated resulting in a mean diffraction efficiency of 99.1% at λ = 810 nm with high spatial uniformity using equipment which can produce gratings up to 1 m diagonal. The implementation of these gratings in the compression of 30 fs pulses in an out-of-plane geometry can result in compressor efficiencies approaching 95%. The measured laser absorption is 500× lower than current ultrafast petawatt-class compressor gratings enabling a substantial increase in average power handling capabilities of these laser systems.},
doi = {10.1016/j.optlastec.2019.04.005},
journal = {Optics and Laser Technology},
number = C,
volume = 117,
place = {United Kingdom},
year = {2019},
month = {9}
}
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https://doi.org/10.1016/j.optlastec.2019.04.005
https://doi.org/10.1016/j.optlastec.2019.04.005
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