A vast number of applications benefit from tunable wavelengths to enable variable excitation conditions. This demand is typically satisfied by optical parametric amplifiers (OPA) . They utilize a second-order nonlinear interaction (χ(2)) of two input laser beams (pump + signal) where the pump beam is depleted during the interaction producing an amplified signal beam. A wavelength conversion is typically achieved by simple rotations of the crystal that provides the nonlinear interaction thereby optimizing the phase-matching condition for the desired wavelengths.
The generation of long-wavelength radiation (several µm, Mid-IR) is particularly suited to be realized using an OPA, but they are also useful for wavelength tuning in the visible to UV spectral range [2,3]. The limited efficiency of the OPA process  sets high demands to the energy and average power of the pump source. Our ultrashort-pulsed Fiber lasers can provide extremely high average power up to 2kW with a pulse energy of up to 20mJ. Upon request, AFS offers various OPA systems seamlessly integrated behind our fiber lasers to match your experimental requirements.
View in AR-App
 G. C. Cerullo, S. de Silvestri "Ultrafast optical parametric amplifiers" Rev. Sci. Instrum. 1, 1–18 (2003).
 R. Baumgartner, R. Byer "Optical parametric amplification" IEEE J. Quantum Electron. 6, 432–444 (1979)
 D. Brida et al. "Generation of broadband mid-infrared pulses from an optical parametric amplifier" Opt. Express 23, 15035–15040 (2007)
 G. Arisholm et al. "Limits to the power scalability of high-gain optical parametric amplifiers" J. Opt. Soc. Am. B 3, 578 (2004)