Details
| Original language | English |
|---|---|
| Title of host publication | 47th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials |
| Subtitle of host publication | 2015 |
| Publisher | SPIE |
| ISBN (electronic) | 9781628418323 |
| Publication status | Published - 23 Nov 2015 |
| Externally published | Yes |
| Event | 47th Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials: 2015 - Boulder, United States Duration: 27 Sept 2015 → 30 Sept 2015 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 9632 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
In the femtosecond regime laser damage thresholds are determined by the electric field distribution within the optical components. Especially, for radiation sources with integrated frequency conversion the simultaneous presence of photons with different frequencies introduces additional ionization channels in optical materials by cross excitation and other effects. In this work we report on the pulse delay dependency of the LIDT of HR390/780nm mirrors under simultaneous exposure to fundamental and second harmonic femtosecond radiation. We perform Son1-tests according to ISO 21254 with the addition of a second harmonic pulse at different fixed pulse energies. To determine the influence of the cross excitation between fundamental and second harmonic radiation, these tests are repeated for different time delays between the two pulses. For the 1on1, single wavelength femtosecond LIDT testing, the Keldysh theory in combination with the Drude Model has been proven to reasonably describe the time dependent electron density in the conduction band, and hence the LIDT. We extend these approaches to the determination of the LIDT for the case of simultaneous interactions of photons of two separate wavelengths.
Keywords
- dual wavelength, fs-LIDT, ultra-short pulse damage
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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47th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials: 2015. SPIE, 2015. 96320W (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9632).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Delay dependency of two-pulse femtosecond laser damage
AU - Gyamfi, Mark
AU - Jürgens, Peter
AU - Jensen, Lars
AU - Ristau, Detlev
N1 - Funding information: The authors thank the Federal Ministry of Education and Research (BMBF) for the financial support within the research project Ultra-LIFE under grant 13N11558
PY - 2015/11/23
Y1 - 2015/11/23
N2 - In the femtosecond regime laser damage thresholds are determined by the electric field distribution within the optical components. Especially, for radiation sources with integrated frequency conversion the simultaneous presence of photons with different frequencies introduces additional ionization channels in optical materials by cross excitation and other effects. In this work we report on the pulse delay dependency of the LIDT of HR390/780nm mirrors under simultaneous exposure to fundamental and second harmonic femtosecond radiation. We perform Son1-tests according to ISO 21254 with the addition of a second harmonic pulse at different fixed pulse energies. To determine the influence of the cross excitation between fundamental and second harmonic radiation, these tests are repeated for different time delays between the two pulses. For the 1on1, single wavelength femtosecond LIDT testing, the Keldysh theory in combination with the Drude Model has been proven to reasonably describe the time dependent electron density in the conduction band, and hence the LIDT. We extend these approaches to the determination of the LIDT for the case of simultaneous interactions of photons of two separate wavelengths.
AB - In the femtosecond regime laser damage thresholds are determined by the electric field distribution within the optical components. Especially, for radiation sources with integrated frequency conversion the simultaneous presence of photons with different frequencies introduces additional ionization channels in optical materials by cross excitation and other effects. In this work we report on the pulse delay dependency of the LIDT of HR390/780nm mirrors under simultaneous exposure to fundamental and second harmonic femtosecond radiation. We perform Son1-tests according to ISO 21254 with the addition of a second harmonic pulse at different fixed pulse energies. To determine the influence of the cross excitation between fundamental and second harmonic radiation, these tests are repeated for different time delays between the two pulses. For the 1on1, single wavelength femtosecond LIDT testing, the Keldysh theory in combination with the Drude Model has been proven to reasonably describe the time dependent electron density in the conduction band, and hence the LIDT. We extend these approaches to the determination of the LIDT for the case of simultaneous interactions of photons of two separate wavelengths.
KW - dual wavelength
KW - fs-LIDT
KW - ultra-short pulse damage
UR - http://www.scopus.com/inward/record.url?scp=84964969121&partnerID=8YFLogxK
U2 - 10.1117/12.2194778
DO - 10.1117/12.2194778
M3 - Conference contribution
AN - SCOPUS:84964969121
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - 47th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials
PB - SPIE
T2 - 47th Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials: 2015
Y2 - 27 September 2015 through 30 September 2015
ER -