[1] A T Forrester, W E Parkins, E Gerjuoy. On the possibility of observing beat frequencies between lines in the visible spectrum[J]. Phys Rev, 1947, 72(8): 728.

[2] J C Wyant. Testing aspherics using two-wavelength holography[J]. Appl Opt, 1971, 10(9): 2113-2118.

[3] C Polhemus. Two-wavelength interferometry[J]. Appl Opt, 1973, 12(9): 2071-2074.

[4] Y Y Cheng, J C Wyant. Multiple-wavelength phase-shifting interferometry[J]. Appl Opt, 1985, 24(6): 804-807.

[5] C Wagner, W Osten, S Seebacher. Direct shape measurement by digital wavefront reconstruction and multi-wavelength contouring[J]. Opt Eng, 2000, 39(1): 79-85.

[6] D G Abdelsalam, D Kim. Two-wavelength in-line phase-shifting interferometry based on polarizing separation for accurate surface profiling[J]. Appl Opt, 2011, 50(33): 6153-6161.

[7] D G Abdelsalam, R Magnusson, D Kim. Single-shot dual-wavelength digital holography based on polarizing separation[J]. Appl Opt, 2011, 50(19): 3360-3368.

[8] Kou Yunli, Li Enpu, Di Jianglei, et al.. Surface morphology measurement of tiny object based on dual wavelength digital holography[J]. Chinese J Lasers, 2014, 41(2): 0209010.

[9] J Kuhn, T Colomb. Real-time dual-wavelength digital holographic microscopy with a single hologram acquisition[J]. Opt Express, 2007, 15(12): 7231-7242.

[10] B Rappaz, P Marquet, E Cuche. Measurement of the integral refractive index and dynamic cell morphometry of living cells with digital holographic microscopy[J]. Opt Express, 2005, 13(23): 9361-9373.

[11] A Khmaladze, R L Matz, C Zhang. Dual-wavelength linear regression phase unwrapping in three-dimensional microscopic images of cancer cells[J]. Opt Lett, 2011, 6(4): 912-914.

[12] Wang Yunxin, Wang Dayong, Yang Yishu, et al.. Application and analysis in the biomedicine field using digital holographic technology[J]. Chinese J Lasers, 2014, 41(2): 0209002.

[13] H J Choi, H H Lim. Measurement of refractive index and thickness of transparent plate by dual-wavelength interference [J]. Opt Express, 2010, 18(9): 9429-9434.

[14] L Xu, X Peng, Z Guo. Imaging analysis of digital holography[J]. Opt Express, 2005, 13(7): 2444-2452.

[15] M T Rinehart, N T Shaked. Simultaneous two-wavelength transmission quantitative phase microscopy with a color camera [J]. Opt Lett, 2010, 35(15): 2612-2614.

[16] U P Kumar, N K Mohan, M P Kothiyal. Red-green-blue wavelength interferometry and TV holography for surface metrology [J]. J Opt, 2011, 40(4): 176.

[17] D S Mehta, V Srivastava. Quantitative phase imaging of human red blood cells using phase-shifting white light interference microscopy with colour fringe analysis[J]. Appl Phy Lett, 2012, 101(20): 203701.

[18] Zeng Yanan, Wang Fei, Lei Hai, et al.. Surface profile measurement of microstructures based on dual-wavelength digital microscopic image-plane holography[J]. Acta Optica Sinica, 2013, 33(10): 1009001.

[19] D Parshall, M Kim. Digital holographic microscopy with dual-wavelength phase unwrapping[J]. Appl Opt, 2006, 1(2): 451-459.

[20] Wang Yujia, Jiang Zhuqing, Gao Zhirui, et al.. Investigation on phase unwrapping in dual wavelength digital holography[J]. Acta Optica Sinica, 2012, 32(10): 1009001.

[21] Z Y Wang, B T Han. Advanced iterative algorithm for phase extraction of randomly phase-shifted interferograms[J]. Opt Lett, 2004, 29(14): 1671-1673.

[22] P Ferraro, S De Nicola, A Finizio. Compensation of the inherent wave front curvature in digital holographic coherent microscopy for quantitative phase-contrast imaging[J]. Appl Opt, 2003, 42(11): 1938-1946.

[23] N Escalante, J Villa, I Rosa. 2-D continuous wavelet transform for ESPI phase-maps denoising[J]. Opt Laser Eng, 2013, 51(9): 1060-1065.

[24] M D Pritt, J S Shipman. Least-squares two-dimensional phase unwrapping using FFT′s[J]. IEEE Trans Geosci Remote Sens, 1994, 32(3): 706-708.