High-resolution acousto-optic shaping of unamplified and amplified femtosecond laser pulses

Pulse-Shaping Techniques Theory and Experimental Implementations for Femtosecond Pulses

“…To further analyze this pulse shaping technology, the mask has to be defined. The different technologies of spatial modulators are acousto-optic modulators (AOM) [Warren (1997)], Liquid Crystals Spatial Light Modulator diffraction-based approach [Vaughan (2005)], and Liquid Crystals Spatial Light Modulator. In the following, the mask used is a double Liquid Crystal Spatial Light Modulators (LC SLM) as described in Wefers (1995).…”

Adaptive Femtosecond Quantum Control

“…This is possible with deformable mirrors [74], which are limited to rather simple pulse shapes with smooth phase-functions. Also acoustooptical modulators [75,76], which shape the optical electric field by diffracting it on a modulated acoustic wave, can be used for this purpose [77], albeit with a low diffraction efficiency and hence low throughput. Micro mirror arrays [78], which consist of individually addressable small mirrors, have also been introduced for this purpose [79].…”

Temporal Modulation of Light Intensity via 1d Time-Variant Photonic Crystal Structure

“…Conventionally, optical modulators are realized by taking advantages of inherent material properties, including 1) electro-optic effects in nonlinear optical materials (LiNbO 3 crystals or polymers) that are found in fiber optic processors [1][2][3]; 2) alignment of polarizations in liquid crystals, which are key components in display technologies [4,5]; 3) electroabsorption effects in quantum wells, or silicon, which are generally applied in integrated optics [6][7][8][9]; 4) acousto-optic effects by refractive modulations in silica glasses using ultrasound waves [10,11], and 5) magneto-optics [12,13]. The modulating capabilities of these devices generally depend on external stimuli (e.g., applied voltages, ultrasound waves), which often need direct contacts with electrodes or vibrating crystals, thus limiting their applications in certain environments.…”