Liu Feng, Xing Qi-Rong, Hu Ming-Lie, Li Yan-Feng, Wang Chang-Lei, Chai Lu, Wang Qing-Yue. Experimental study on nonlinear absorption and Kerr effect in undoped GaP induced by femtosecond laserJ. Acta Physica Sinica, 2011, 60(1): 017806. DOI: 10.7498/aps.60.017806