研究了温度梯度控制成丝中的自压缩现象。以充有2.0×105Pa氩气的密闭气体作为成丝介质,在焦点处加热,由热传导形成温度梯度。25℃,0.8mJ能量入射输出脉冲在没有任何色散补偿手段的情况下自压缩到17fs,其傅里叶脉冲变换极限为5.5fs。将脉冲能量提高到2.7mJ,在中心为450℃的温度梯度下,输出脉冲自压缩到19fs,其傅里叶脉冲变换极限为14.5fs。通过温度控制将自压缩的能量提高了近2mJ,实现了从脉冲自压缩到单丝脉冲展宽继而多丝的过程。 The self-compression phenomenon in temperature control of filaments was studied. To 2.0 × 105Pa argon gas filled with a closed gas as a filament medium, at the focus of heating, the temperature gradient formed by conduction. At 25 ° C, a 0.8 mJ energy incident output pulse self-compresses to 17 fs without any dispersion compensation and has a Fourier transform limit of 5.5 fs. The pulse energy was increased to 2.7mJ, the temperature of the center of 450 ℃ gradient, the output pulse self-compression to 19fs, the Fourier transform limit of 14.5fs. By controlling the temperature self-compressed energy increased by nearly 2mJ, from pulse compression to the monofilament pulse broadening and then multi-filament process.