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FRANCAIS
DEUTSCH
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Directed Photonics & Quantum Electronics
Activities
Directed-Energy Lasers:
- Medium and high energy solid-state heat-capacity lasers (SSHCL) at “eye-safe” wavelengths
Lasers for Optronic Countermeasures
(OCM)
- 1.5 µm to mid-IR fiber lasers and solid-state lasers
(Er3+, Tm3+, Ho3+, Cr2+)
- Nonlinear conversion by ZGP and OP-GaAs
Laser-Related Technologies
- Adaptive optics (AO) for laser correction
- Neural networks for AO (+ ISL-ELSI)
- Ceramic laser media (+ ISL-ECN/PCN)
Dual-Use Aspects
- Medical lasers for neurosurgery
- Adaptive optics for image correction
Pulsed Tm3+:silica fiber laser pumping a PPLN frequency multiplier
Skills
- Experimental and theoretical laser research
- Modeling of lasers and thermal effects (spectra, thermal lens)
- Expertise in lasers and photonics
Equivalent surface of a hollow pump duct
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Facilities
Solid-state & heat-capacity laser labs
Various pump sources (up to 800 W for Tm3+, ~ 100 W for Ho3+, up to 10 kW for Er3+)
Fiber laser labs with fiber pump sources up to 240 W (~ 800 nm and ~ 976 nm)
SSHCL laser crystal in operation
Results
- Theworld’s first “eye-safe” SSHCL
- The first directly-fiber-pumped OP-GaAs Mid-IR OPO
- > 100 kHz pulsed fiber lasers at 2 µm
- The first high-pulse-energy Ho3+:LLF laser
- Development of novel theories of lasers (spectra, fluorescence, fully spectral description)
OP-GaAs OPO for Mid-IR wavelength conversion
Laser beam profile of an Er3+: YAG laser at various operating conditions
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