Laser applied to circuit board circuit imaging

• Main Authors: ZHONG ZHENGGEN, ZHENG CHANGHE
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2014
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

The utility model relates to a laser applied to circuit board circuit imaging. The laser comprises a pumping source and a resonant cavity. The resonant cavity is composed of three full reflection mirrors, an output mirror, an ND:YVO4 crystal, a Q switch, an LBO crystal and an etalon. An optical path is a Z-shaped optical path. A beam of the pumping source is converted into fundamental frequency lights through the full reflection mirrors and a laser crystal, and the lights are controlled by the Q switch. The fundamental frequency lights are converted into frequency doubling lights through a frequency doubling crystal, and are output by the output mirror. The fundamental frequency lights which are not converted are reflected to the full reflection mirrors by the output mirror, and then are reflected into the cavity through the full reflection mirrors. Frequency doubling is carried out in the Z-shaped cavity, which can improve the power of output laser. The laser has the advantage of compact structure, and can a