Generation of 0.5 mJ, few-cycle laser pulses by an adaptive phase modulator

• DOI: 10.1364/oe.16.014448
• Publication Date: 2008-09-02T18:28:35Z
• Authors: He Wang; Yi Wu; Chengquan Li; Hiroki Mashiko; Steve Gilbertson; Zenghu Chang
• Keywords: Spatial light modulator

Previously, pulses shorter than 4 fs were generated by compressing white light from gas-filled hollow-core fibers with adaptive phase modulators; however, the energy of few-cycle was limited to 15 microJ. Here, we report generation 550 microJ, 5 using a liquid crystal spatial modulator in grating-based 4f system. The high pulse obtained improving throughput and increasing input laser energy. When used harmonic generation, it found that spectra depend strongly on order spectral phases driving fields.