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Whereas most of the reports on the nonlinear properties of micro- and nanostructures address the generation of distinct signals, such as second or third harmonic, we recently demonstrated that the novel generation of dual output lasers developed for microscopy can readily increase the accessible parameter space and enable the simultaneous excitation and detection of multiple emission orders such as several harmonics and signals stemming from various sum and difference frequency mixing processes. [1] This rich response, which in our case features 10 distinct emissions and encompasses the whole spectral range from the deep ultraviolet to the short-wave infrared region, is demonstrated using various nonlinear oxide nanomaterials while being characterized and simulated temporally and spectrally.

We propose a new technique for efficient generation of 6 THz near-single-cycle transients though optical rectification of 800 nm fs laser pulses in a DAST/SiO 2 multilayer structure. The use of such a composite material allows to obtain phase-matching and control cascaded nonlinear processes.

We report our progress and the first optical application on the high-aspect ratio micromirror array for UV-NIR femtosecond (fs) broadband pulse shaping [1]. It is a bulk-micromachined device. capable of individually addressing 100 mirrors with a stroke of up to 3 μm using vertical comb drives in a novel. symmetrical double-spring design. The device was successfully implemented in a fs pulse shaper setup at λ 0 =795 nm.

We are fabricating a bulk-micromachined micromirror device for laser pulse shaping applications on femtosecond time scales. An array of micromirrors is used to individually retard or diminish certain laser frequencies spanning from the UV to the near-infrared. The individual mirrors are fixed by two springs on either side and can be tilted (amplitude modulation) or moved out-of plane (phase modulation) using asymmetrical or symmetrical vertical comb drives, respectively.