4 results about "Greenlight laser" patented technology

The invention relates to a high-power green laser synthesis system based on a rotary frequency doubling crystal and multiple beams of infrared pulse laser, and belongs to the technical field of laser. The system comprises a multi-beam pulse infrared laser device, a frequency doubling crystal module, an annular rotating mechanism, a beam combining device, a continuous infrared laser device, a laser frequency regulation and control device and a rotating driving control system. The four beams of pulse infrared laser sources are symmetrically arranged along the circumferential edge, and periodically staggered output is realized through frequency regulation and control; the multiple frequency doubling crystals are distributed along the rotating circular ring at equal intervals and are sequentially aligned with laser pulses under driving of the rotating mechanism, and efficient frequency doubling is achieved. The center continuous infrared laser generates stable green light through frequency doubling of the fixed crystal. Finally, the green light generated by the multiple frequency doubling crystals and the central green light are integrated into a single light beam through a beam combining device to be output. According to the system, the power upper limit and the stability of green laser are remarkably improved through energy sharing of polycrystals, rotary dynamic matching and annular cooling, and the problems that existing green laser is limited in power and serious in heat effect are solved.

This application provides a green laser, which sequentially includes a pump source, a collimating lens, a focusing lens, a first cavity mirror, a gain medium, a Q-switching element, and a second cavity mirror in a first direction; sequentially includes a third cavity mirror and a displacement motor in a second direction; and sequentially includes a first beam splitter, a frequency doubling crystal, and a fourth cavity mirror in a third direction. The third cavity mirror is located behind the second cavity mirror in the second direction, and the first beam splitter is located behind the first cavity mirror in the third direction. This application achieves adjustable cavity length by moving the third cavity mirror in the second direction through the position of the displacement motor. This allows the green laser to achieve a cavity length suitable for different power outputs by adjusting the cavity length, enabling the same green laser to output multiple power stably and continuously. Therefore, a green laser with precisely adjustable cavity length, compatible with multiple high and low power overlapping stable outputs, high integration, and compact structure is obtained.

The utility model relates to a kind of green laser, comprising: resonant cavity, for generating non-polarization base frequency light;Frequency doubling unit, for the non-polarization base frequency light is output green laser after frequency doubling. Resonant cavity is provided with: narrowband high reflection fiber grating, second end is connected with the signal fiber of first pump combiner;First pump source, tail fiber is connected with the pump fiber of first pump combiner;First pump combiner, forward use;Multi-clad fiber, first end is connected with the output fiber of first pump combiner, second end is connected with the input fiber of second pump combiner;Second pump combiner, reverse use;Second pump source, tail fiber is connected with the pump fiber of second pump combiner;Narrowband low reflection uniform fiber grating, first end is connected with the output fiber of second pump source;Optical power stripper, input end is connected with the second end of narrowband low reflection uniform fiber grating;High-power output head. The utility model can output green laser, simple structure, low in cost.