High-power multi-GHz repetition frequency femtosecond optical parametric oscillator
By using a femtosecond laser with GHz repetition frequency as the pump source and adjusting the cavity length of the resonant cavity, the problems of low energy conversion efficiency and insufficient output power in the prior art are solved, and the simultaneous output of signal light and idle frequency light with high power GHz repetition frequency are achieved.
CN119726338AActive Publication Date: 2025-03-28BEIJING FENGYI LASER TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202510238330.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2045-03-03
AI Technical Summary
Technical Problem
When the existing GHz femtosecond optical parametric oscillator outputs signal light and idle frequency light, the energy conversion efficiency is low, the output power is insufficient, and it is difficult to obtain signal light and idle frequency light at the GHz repetition frequency simultaneously.
Method used
A femtosecond laser with GHz repetition frequency is used as the pump source, and the output of signal light and idle frequency light at high power GHz repetition frequency is achieved.
Benefits of technology
The simultaneous output of signal light and idle frequency light with high power GHz repetition frequency is achieved, which improves energy conversion efficiency and output power, and has wide application potential.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of ultrafast laser, in particular to a high-power multi-GHz repetition frequency femtosecond optical parametric oscillator. Comprising a pumping source, a first half-wave plate, a polarization splitting prism, a second half-wave plate, a first reflecting mirror, a second reflecting mirror, a focusing mirror, a first concave mirror, a nonlinear optical crystal, a second concave mirror, a third reflecting mirror, an output coupling mirror and a collimating mirror. The first concave mirror, the second concave mirror, the third reflecting mirror and the output coupling mirror form a resonant cavity of the femtosecond optical parametric oscillator; when the cavity length of the resonant cavity is set to be integral multiples of the cavity length of the pumping source, the femtosecond optical parametric oscillator can simultaneously realize pulse output of signal light with GHz repetition frequency and idler frequency light; when the cavity length of the resonant cavity is set to be 1 / K of the cavity length of the pumping source on the basis of the integral multiple of the cavity length of the pumping source, the repetition frequency of the signal light can be improved by K times, and pulse output of the multi-GHz signal light is achieved.
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