Abstract: A movable holder includes a showerhead seat assembly; a mounting frame having a first receiving groove, the showerhead seat assembly being rotatably mounted on the mounting frame, a mating boss being provided on the mounting frame, and a locking member being mounted on the mating boss; a transmission seat movably mounted in the first receiving groove, a limiting structure being provided between the mounting frame and the transmission seat; and a damping member sleeved with the transmission seat by an interference fit and in a relatively rotatable manner and rotated synchronously with the showerhead seat assembly, an elastic member being pressed between the damping member and the showerhead seat assembly. The transmission seat is configured to drive, along with the rotation of the damping member, the locking member to move between a locked position and an unlocked position. A shower assembly includes the movable holder.

Abstract: A movable holder includes a showerhead seat assembly; a mounting frame having a first receiving groove, the showerhead seat assembly being rotatably mounted on the mounting frame, a mating boss being provided on the mounting frame, and a locking member being mounted on the mating boss; a transmission seat movably mounted in the first receiving groove, a limiting structure being provided between the mounting frame and the transmission seat; and a damping member sleeved with the transmission seat by an interference fit and in a relatively rotatable manner and rotated synchronously with the showerhead seat assembly, an elastic member being pressed between the damping member and the showerhead seat assembly. The transmission seat is configured to drive, along with the rotation of the damping member, the locking member to move between a locked position and an unlocked position. A shower assembly includes the movable holder.

Abstract: An optical frequency conversion method, apparatus, and device are provided. Micro-nano fibers and guiding fibers are cascaded, to change an optical frequency conversion manner from using a long micro-nano fiber as a frequency conversion medium to cascading a first quantity of shorter micro-nano fibers and a second quantity of guiding fibers to perform optical frequency conversion. A length of each micro-nano fiber is not greater than a coherence length of a fundamental-frequency pump light signal and a frequency-tripled light signal. The frequency-tripled light generated by cascaded micro-nano fibers is coherently superposed. A phase difference between frequency-tripled light components is controlled by adjusting incident power of the fundamental-frequency pump light, to achieve constructive interference, thereby significantly enhancing the frequency-tripled light signal and effectively improving the optical frequency conversion efficiency.

Abstract: An optical frequency conversion method, apparatus, and device are provided. Micro-nano fibers and guiding fibers are cascaded, to change an optical frequency conversion manner from using a long micro-nano fiber as a frequency conversion medium to cascading a first quantity of shorter micro-nano fibers and a second quantity of guiding fibers to perform optical frequency conversion. A length of each micro-nano fiber is not greater than a coherence length of a fundamental-frequency pump light signal and a frequency-tripled light signal. The frequency-tripled light generated by cascaded micro-nano fibers is coherently superposed. A phase difference between frequency-tripled light components is controlled by adjusting incident power of the fundamental-frequency pump light, to achieve constructive interference, thereby significantly enhancing the frequency-tripled light signal and effectively improving the optical frequency conversion efficiency.