[1] [1] King P G R, Steward G J. Metrology with an optical master. New Scient, 1963, 17:180～182

[2] [2] Wang W M, Boyle W J O, Grattan K T V. Self-mixing Interference in a diode laser: Experimental observations and theoretical analysis. Appl. Opt., 1993, 32(9):1551～1558

[3] [3] Wang W M, Grattan K T V. Active optical feedback in a dual-diode laser configuration applied to displacement measurements with a wide dynamic range. Appl. Opt., 1994, 33(10):1795～1801

[4] [4] Takahashi N, Kakuma S. Active heterodyne interferometric displacement measurement using optical feedback effects of laser diode. Opt. Engng., 1996, 35(3):802～806