Lensless two-color ghost imaging from the perspective of coherent-mode representation<xref rid="cpb_27_9_094202_fn1" ref-type="fn">*</xref><fn id="cpb_27_9_094202_fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 61771067, 61631014, 61471051, and 61401036) and the Youth Research and Innovation Program of Beijing University of Posts and Telecommunications, China (Grant Nos. 2015RC12 and 2017RC10).</p></fn>

Lensless two-color ghost imaging from the perspective of coherent-mode representation**

Project supported by the National Natural Science Foundation of China (Grant Nos. 61771067, 61631014, 61471051, and 61401036) and the Youth Research and Innovation Program of Beijing University of Posts and Telecommunications, China (Grant Nos. 2015RC12 and 2017RC10).

Luo Bin^{1, †}, Wu Guohua², Yin Longfei²

(a) The distribution difference of f_n which is magnified ten times when λ₁ is increased from 532 nm to 546 nm (upper left) and the reconstructed image (bottom left). (b) The case for λ₁ = 560 nm. Other parameters are the same as those in Fig. 2. (c) The fidelity versus the wavelength difference.