Details
| Original language | English |
|---|---|
| Pages (from-to) | 4329-4332 |
| Number of pages | 4 |
| Journal | Optics letters |
| Volume | 43 |
| Issue number | 18 |
| Early online date | 9 Aug 2018 |
| Publication status | Published - 4 Sept 2018 |
Abstract
High-energy, multi-octave supercontinuum (SC) generation in bulk media pumped with picosecond pulses in the mid-infrared, though pivotal in a myriad of applications, poses severe constraints due to wavelength scaling of the critical power criterion and the propensity to induce avalanche-ionization-seeded breakdown mechanisms. Here, we demonstrate a simple experimental geometry, relying on a very low numerical aperture for the pump pulse, and a crystal length commensurate with the Rayleigh length of the focusing geometry, generating a multi-octave, stable SC in yttrium aluminum garnet (YAG). The SC ranges from 500 nm to 3.5 μm (measured at −30 dB with spectral components at wavelengths up to 4.5 μm) when pumped by a 3 ps pulse centered at 2.05 μm in the anomalous dispersion regime. We also investigate the dynamics of filament formation in this interaction regime by monitoring the spectral and temporal evolution of the pulse during its propagation through the length of the crystal.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Optics letters, Vol. 43, No. 18, 04.09.2018, p. 4329-4332.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Multi-octave supercontinuum generation in YAG pumped by mid-infrared, multi-picosecond pulses
AU - Cheng, Siqi
AU - Chatterjee, Gourab
AU - Tellkamp, Friedjof
AU - Ruehl, Axel
AU - Dwayne Miller, R. J.
N1 - Funding Information: The authors thank Huseyin Cankaya (CFEL, DESY, Germany) for his valuable input and Andrew Duran (Infrared Systems Development Corporation, USA) and Hendrik Schikora (MPSD, Germany) for technical support.
PY - 2018/9/4
Y1 - 2018/9/4
N2 - High-energy, multi-octave supercontinuum (SC) generation in bulk media pumped with picosecond pulses in the mid-infrared, though pivotal in a myriad of applications, poses severe constraints due to wavelength scaling of the critical power criterion and the propensity to induce avalanche-ionization-seeded breakdown mechanisms. Here, we demonstrate a simple experimental geometry, relying on a very low numerical aperture for the pump pulse, and a crystal length commensurate with the Rayleigh length of the focusing geometry, generating a multi-octave, stable SC in yttrium aluminum garnet (YAG). The SC ranges from 500 nm to 3.5 μm (measured at −30 dB with spectral components at wavelengths up to 4.5 μm) when pumped by a 3 ps pulse centered at 2.05 μm in the anomalous dispersion regime. We also investigate the dynamics of filament formation in this interaction regime by monitoring the spectral and temporal evolution of the pulse during its propagation through the length of the crystal.
AB - High-energy, multi-octave supercontinuum (SC) generation in bulk media pumped with picosecond pulses in the mid-infrared, though pivotal in a myriad of applications, poses severe constraints due to wavelength scaling of the critical power criterion and the propensity to induce avalanche-ionization-seeded breakdown mechanisms. Here, we demonstrate a simple experimental geometry, relying on a very low numerical aperture for the pump pulse, and a crystal length commensurate with the Rayleigh length of the focusing geometry, generating a multi-octave, stable SC in yttrium aluminum garnet (YAG). The SC ranges from 500 nm to 3.5 μm (measured at −30 dB with spectral components at wavelengths up to 4.5 μm) when pumped by a 3 ps pulse centered at 2.05 μm in the anomalous dispersion regime. We also investigate the dynamics of filament formation in this interaction regime by monitoring the spectral and temporal evolution of the pulse during its propagation through the length of the crystal.
UR - http://www.scopus.com/inward/record.url?scp=85053185003&partnerID=8YFLogxK
U2 - 10.1364/OL.43.004329
DO - 10.1364/OL.43.004329
M3 - Article
C2 - 30211856
AN - SCOPUS:85053185003
VL - 43
SP - 4329
EP - 4332
JO - Optics letters
JF - Optics letters
SN - 0146-9592
IS - 18
ER -