Proposal of high quality walk-off compensated sum frequency generation of ultra-short pulses |
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Authors: | Jin Jer Huang Yan Qin Chang Tao Shen Yu Qiang Yang |
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Institution: | Department of Optical Information Science and Technology, Harbin University of Science and Technology, West Campus, P.O. Box 125, 150080 Harbin, China |
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Abstract: | A multi-crystal and a frequency-selective group-velocity compensating schemes are proposed for the sum frequency-third harmonic generation of low power ultra-short pulses from a Ti:sapphire femtosecond laser. The mechanisms of compensation are analyzed accordingly. It is shown that the temporal walk-off can be effectively compensated without any dispersive element. By use of BBO, calcite crystals together with specially designed composite phase delay plates and dichroic beamsplitters, high quality third harmonic ultra-violet pulses within 300 nm can be generated by the two schemes. |
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Keywords: | 42 65 Ky 42 65 Re 42 79 Nv |
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