185. Yujie Zhang, Huiwen Hao, Limin Song, Haiping Wang, Denghui Li, Domenico Bongiovanni, Jingyan Zhan, Ziheng Xiu, Daohong Song, Liqin Tang, Roberto Morandotti, and Zhigang Chen, "Nonlinear optical response of heme solutions," Opt. Express 32, 5760-5769