Brundavanam Maruthi M, Viswanathan Nirmal K, Rao D Narayana
School of Physics, University of Hyderabad, Hyderabad 500046, India.
J Opt Soc Am A Opt Image Sci Vis. 2009 Dec;26(12):2592-9. doi: 10.1364/JOSAA.26.002592.
We report here a detailed experimental study to demonstrate the effect of source spectral characteristics such as spectral bandwidth (Deltalambda), peak wavelength (lambda(0)), and shape of the spectrum on the spectral shifts and spectral switches measured due to temporal correlation in a white-light Michelson interferometer operated in the spectral domain. Behavior of the spectral switch characteristics such as the switch position, switch amplitude, and switch symmetry are discussed in detail as a function of optical path difference between the interfering beams. The experimental results are compared with numerical calculations carried out using interference law in the spectral domain with modified source spectral characteristics. On the basis of our results we feel that our study is of critical importance in the selection of source spectral characteristics to further improve the longitudinal resolution or the measurement sensitivity in spectral-domain optical coherence tomography and microscopy.
我们在此报告一项详细的实验研究，以证明诸如光谱带宽（Δλ）、峰值波长（λ₀）以及光谱形状等光源光谱特性对在光谱域中运行的白光迈克尔逊干涉仪中由于时间相关性而测量到的光谱位移和光谱开关的影响。作为干涉光束之间光程差的函数，详细讨论了诸如开关位置、开关幅度和开关对称性等光谱开关特性的行为。将实验结果与使用具有修改后的光源光谱特性的光谱域干涉定律进行的数值计算进行了比较。基于我们的结果，我们认为我们的研究对于选择光源光谱特性以进一步提高光谱域光学相干断层扫描和显微镜中的纵向分辨率或测量灵敏度至关重要。
