Pan Guanzhong, Xun Meng, Sun Yun, Dong Yibo, Wu Dexin
Opt Lett. 2024 Jul 15;49(14):4046-4049. doi: 10.1364/OL.528640.
Holography technology is considered the ultimate three-dimensional (3D) visualization technology in the future. However, conventional methods for achieving holography generally utilize discrete optical components and off-chip laser sources, resulting in a large size and high complexity, which are undesirable for practical applications. In this Letter, chip-scale integrated holographic devices are realized by integrating top-emitting vertical cavity surface emitting lasers (VCSELs) with micro holograms printed by 3D femtosecond laser nanoprinting technology. The VCSELs are designed to operate in a single fundamental mode with a Gaussian emission profile. Then the Gaussian beams are phase-modulated by the integrated micro holograms designed by the Gerchberg-Saxton (GS) algorithm and the target holographic images can be displayed behind the holograms. Such integrated holographic devices are of micron size and can be easily scaled into arrays with arbitrary channels on-demand, which are important for achieving miniaturized and portable holographic imaging systems.
全息技术被认为是未来终极的三维（3D）可视化技术。然而，实现全息术的传统方法通常使用离散光学元件和片外激光源，导致尺寸大且复杂度高，这对于实际应用来说是不可取的。在本信函中，通过将顶部发射垂直腔面发射激光器（VCSEL）与采用三维飞秒激光纳米打印技术印制的微全息图集成，实现了芯片级集成全息器件。VCSEL被设计为以具有高斯发射轮廓的单基模运行。然后，高斯光束由通过格尔奇贝格 - 萨克斯顿（GS）算法设计的集成微全息图进行相位调制，并且目标全息图像可以显示在全息图后方。这种集成全息器件尺寸为微米级，并且可以根据需要轻松扩展为具有任意通道的阵列，这对于实现小型化和便携式全息成像系统至关重要。
