A fiber-coupled output Q-switched solid-state laser and its manufacturing process

Abstract

The invention discloses a fiber-coupled output Q-switched solid-state laser and a manufacturing process. The laser comprises a laser medium fixed in a shell and an output fiber. A 1,064nm total reflection film and an 808nm total transmission film are plated on one end face of the laser medium. A 1,064nm partial transmission film and an 808nm total reflection film are plated on the end face of the output fiber in the shell. The end face of the laser medium with the 1,064nm total reflection film and the end face of the output fiber with the 1,064nm partial transmission film form a resonant cavity in the shell. A Q-switched crystal is arranged between the laser medium and the output fiber in the resonant cavity. The laser is favorable to improve beam quality and simplify the fiber output coupling structure of a diode-pumped solid-state laser (DPL). The end face of the fiber has a small diameter, so that the oscillation of a high-order mode in the resonant cavity can be suppressed, and the shortcomings of the conventional coupling mode can be overcome. An output window is miniature, so that the engineered, modular and standard design of the DPL is facilitated.

Description

technical field [0001] The invention relates to a laser diode-pumped solid-state laser, in particular to a fiber-coupled output Q-switched solid-state laser and a manufacturing process. Background technique [0002] Laser diode-pumped solid-state lasers (DPL) usually output directly in the form of a window. In the process of using DPL, the beam is directly output, which limits the flexibility of laser use and the relationship between the laser and other equipment using DPL. Coupling connection between. [0003] The traditional DPL fiber coupling output method is to add a coupling device outside the DPL output mirror (or laser housing), couple the beam output through the window into the optical fiber, and then pass through the optical fiber and other optical instruments (or equipment) using DPL. It is difficult to adjust the coupling by this method, and the coupling efficiency is likely to decrease after long-term use, and the coupling needs to be re-adjusted. At the same ti...

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Problems solved by technology

[0002] Laser diode-pumped solid-state lasers (DPL) usually output directly in the form of a window. In the process of using DPL, the beam is directly output, which limits the flexibility of laser use and the relationship between the laser and other equipment using DPL. Coupling connection between

[0003] The traditional DPL fiber coupling output method is to add a coupling device outside the DPL output mirror (or laser housing), couple the beam output through the window into the optical fiber, and then pass through the optical fiber and other optical instruments (or equipment) using DPL. It is difficult to adjust the coupling by this method, and the coupling efficiency is likely to decrease after long-term use, and the coupling needs to be re-adjusted. At the same time, the size, weight and appearance of the DPL are increased.

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