Abstract: The present disclosure provides a method for aligning a master oscillator power amplifier (MOPA) system. The method includes ramping up a pumping power input into a laser amplifier chain of the MOPA system until the pumping power input reaches an operational pumping power input level; adjusting a seed laser power output of a seed laser of the MOPA system until the seed laser power output is at a first level below an operational seed laser power output level; and performing a first optical alignment process to the MOPA system while the pumping power input is at the operational pumping power input level, the seed laser power output is at the first level, and the MOPA system reaches a steady operational thermal state.

Abstract: A screen protector includes inner and outer PET films, a printed black-frame film, a PET release film, and a PE protective film. The inner PET film has a printed peripheral area for electrostatic attraction and a transparent central area. The printed black-frame film has a frame-like peripheral area coated in the desired color and shaped as the printed peripheral area of the inner PET film. The inner PET film, the printed black-frame film, and the outer PET film are sequentially bonded, before the PET release film and the PE protective film are bonded to the inner and outer PET films respectively. The screen protector can be cut to size and formed with holes at predetermined positions. To apply the screen protector to a screen, the PET release film is peeled off, allowing the printed peripheral area of the inner PET film to attach compliantly to the screen by electrostatic attraction.

Abstract: An adhering jig and an adhering method for screen protector plastic sheets are provided for encapsulating and packing, by means of the adhering jig capable of safe coverage, screen protector plastic sheets intended to protect the surfaces of panel cell phones against scratches inflicted by foreign bodies, in the course of delivery or sales after being manufactured by a manufacturer, so as to preclude contact with and prevent dents, bends, or damage from occurring to the screen protector plastic sheets and covering the surfaces of the panel cell phones with the screen protector plastic sheets by means of the packing-oriented adhering jig to achieve precise smoothness and flawless attachment.