| 摘要 |
A ring laser sensor, comprising a pumping source (101), a common segment (106), a reference segment (104) and a detection segment (105). The common segment (106) is provided with a gain medium (102), the common segment (106) and the reference segment (104) form a first ring laser resonant cavity, the common segment (106) and the detection segment (105) form a second ring laser resonant cavity, and a transmission direction of laser light in the first ring laser resonant cavity is opposite to that of laser light in the second ring laser resonant cavity; and the detection segment (105) is provided with a sensing element (103) capable of causing an optical path change, the common segment (106) is provided with an output unit (120), or the reference segment and the detection segment are each provided with an output unit (116, 117), and the output units (120; 116, 117) are connected to a photoelectric detector (119) via a light combination unit (118). The ring laser sensor comprises two ring laser resonant cavities in the opposite transmission directions, and a sensing element (103) is provided at the detection segment (105). Laser frequencies are extremely sensitive to the light path change of the resonant cavities, and therefore the detection sensitivity and precision of the sensor are relatively high; and in addition, the sensor has a shared optical path, and therefore the sensor is strong in anti-jamming capability and applicable to measuring the tiny change of various physical quantities. |
