Wavefront evolution of the signal beam in Ti:sapphire chirped pulse amplifier<xref rid="cpb_28_1_014203_fn1" ref-type="fn">*</xref><fn id="cpb_28_1_014203_fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant No. 61775223) and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB1603).</p></fn>

Wavefront evolution of the signal beam in Ti:sapphire chirped pulse amplifier**

Project supported by the National Natural Science Foundation of China (Grant No. 61775223) and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB1603).

Guo Zhen^{1, 2}, Yu Lianghong^{1, †}, Li Wenqi^{1, 2, 3}, Gan Zebiao¹, Liang Xiaoyan^{1, 3, ‡}

Experimental setup of wavefront detection in the Ti:sapphire CPA laser system. The signal pulse was amplified by the three-pass 80 mm diameter Ti:sapphire. The output beam was reflected by two uncoated plane reflectors (PR) to protect the SID4. The energies of the pump and signal beams were measured with pyroelectric energy meters ①–③.