Servo matching control mid-infrared differential dual-wavelength laser based on multi-period nd:mgo:ppln

A servo matching control mid-infrared differential dual-wavelength laser based on multi-period ND:MGO:PPLN, comprising:

• an 813 nm semiconductor pumping source, an energy transmitting optical fiber, a first focusing lens, a second focusing lens, a first 45-degree beam splitter, a mid-infrared idle frequency light output mirror, a multi-period Nd:MgO:PPLN polarized crystal, a servo motor, a mid-infrared idle frequency light total reflection mirror, a microprogrammed control unit, a second 45-degree beam splitter, an electro-optical crystal, a 1093 nm fundamental frequency light total reflection mirror, and a 1084 nm fundamental frequency light total reflection mirror,
• wherein the 813 nm semiconductor pumping source, the energy transmitting optical fiber, the first focusing lens, the second focusing lens, the first 45-degree beam splitter, the mid-infrared idle frequency light output mirror, the multi-period Nd:MgO:PPLN polarized crystal, the servo motor, the mid-infrared idle frequency light total reflection mirror, the microprogrammed control unit, the second 45-degree beam splitter, the electro-optical crystal, and the 1093 nm fundamental frequency light total reflection mirror are sequentially placed from right to left in a straight cavity of the laser;
• wherein the 1084 nm fundamental frequency light total reflection mirror is placed in a bent-shape cavity of the laser, corresponding to a position of the second 45-degree beam splitter, such that that the second 45-degree beam splitter reflects incident light to the 1084 nm fundamental frequency light total reflection mirror.