| 摘要 |
An impulsive synchronization spectrometer based on adjustable time window, includes a synchronous controller, a pulse light source, a high speed collection card, a computer system, a first photoelectric detector, a second photoelectric detector and a testing optical path system; wherein the synchronous controller has four output terminals. The first output terminal is connected with the pulse light source; and the second output terminal is connected with a computer; the third output terminal and the fourth output terminal are respectively connected with two channels of the high speed collection card and respectively output two-channel signals of a third synchronous signal and a fourth synchronous signal respectively serving as external triggering signals of the two channels to control signals in the two channels of the high speed collection card, the first photoelectric detector and the second photoelectric detector are respectively connected with the two channels of the high speed collection card. |
| 主权项 |
1. An impulsive synchronization spectrometer based on adjustable time window, comprising: a synchronous controller (1), a pulse light source (2), a high speed collection card (3), a computer system (4), a first photoelectric detector (5), a second photoelectric detector (15) and a testing optical path system;
wherein the synchronous controller (1) has four output terminals which are a first output terminal, a second output terminal, a third output terminal and a fourth output terminal, which respectively output four-channel signals synchronously, a delay exists between each channel of synchronous signals; wherein the first output terminal is connected with the pulse light source (2) and outputs a first synchronous signal for serving as an external triggering signal of the pulse light source (2) to control output of optical pulse; the fourth output terminal is connected with a computer and outputs a fourth synchronous signal for informing the computer system (4) to read data of the high speed collection card (3); the second output terminal and the third output terminal are respectively connected with two channels of the high speed collection card (3) and respectively output two-channel signals which are a second synchronous signal and a third synchronous signal respectively serving as external triggering signals of the two channels to control signals in the two channels of the high speed collection card (3), and collection time is pulse width of the second synchronous signal and the third synchronous signal; the first photoelectric detector (5) and the second photoelectric detector (15) are respectively connected with the two channels of the high speed collection card; constitution of the testing optical path system is: pulsed light emitted by the pulse light source (2) is reflected by a reflector (6) to change propagation direction, passes through a polarizing film (7) and then is incident to a beam splitter (8) to be splitted into a first pulsed light and a second pulsed light, and the first pulsed light serves as a reference light and the second pulsed light serves as a useful signal light, the reference light is vertically incident to the first photoelectric detector (5) to be converted into a reference signal; the useful signal light passes through a lens on a same circuit and to be gathered, and then passes through an entrance slit (10), a second reflector (11) to be incident to a grating group (16) which is provided on a turnplate (12) to be reflected, and then passes through a third reflector (13) and an exit slit (14) to access a second photoelectric detector (15) to be converted to useful signals. |
