We have developed a facility for recording colour digital holograms involving a Mach – Zender interferometer and a pulsed solid-state RGB laser, which radiates simultaneously at three wavelengths: 451, 532, and 634 nm. These wavelengths are obtained in the conversion of the radiation of a pulsed Nd 3+ : YAG laser (1064 nm), which operates in the regime of intracavity parametric oscillation at a wavelength of 1570 nm, with the subsequent conversion of its frequencies to the red, green, and blue spectral regions in nonlinear KTP-crystal elements. The combination of this threewavelength pulsed light source with the Mach – Zender interferometer provides the simultaneous recording of three spectral digital holograms with one matrix RGB radiation detector. Pulsed threecolour digital holography shows promise for the analysis of fast processes and rapidly varying colour phase objects.

中文翻译：

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基于Mach – Zender干涉仪和固态RGB激光的三色数字全息显微镜

我们已经开发了一种用于记录彩色数字全息图的设备，该设备涉及Mach-Zender干涉仪和脉冲固态RGB激光，它们同时以三种波长（451、532和634 nm）辐射。这些波长是在脉冲Nd 3+：YAG激光（1064 nm）的辐射转换中获得的，该激光在腔内参数振荡的情况下工作于1570 nm的波长，随后将其频率转换为红色，非线性和KTP晶体元素中的绿色和蓝色光谱区域。这种三波长脉冲光源与马赫-曾德尔干涉仪的结合使用一个矩阵RGB辐射探测器可以同时记录三个光谱数字全息图。