We report on simultaneous sum-frequency mixing and doubling of C-band and ${\sim}{980}\;{\rm nm}$ laser sources using a single segmented periodically poled lithium niobate (PPLN) crystal in a single-pass configuration. Our theoretical analysis on the spectral outputs show that a proper design of a five-segment single PPLN crystal has potential to generate violet, blue, green, and orange wavelengths by simultaneous sum-frequency and second-harmonic generation processes. Such a design has promising potential for a compact, tunable multicolored laser that can find various applications such as in biomedicine, visible light communications, laser-based color displays, and sensing.

中文翻译：

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在单个MgO：PPLN块状晶体中同时产生多色相干光的设计

我们报告了使用单分段周期性极化铌酸锂（PPLN）晶体在一次通过中同时对C波段和$ {\ sim} {980} \; {\ rm nm} $激光源进行总和频率混合和加倍组态。我们对光谱输出的理论分析表明，五段单PPLN晶体的正确设计有可能通过同时产生和频和二次谐波产生过程来产生紫色，蓝色，绿色和橙色波长。这种设计对于紧凑，可调谐的彩色激光器具有广阔的前景，该激光器可以找到各种应用，例如在生物医学，可见光通信，基于激光的彩色显示器和传感方面。