专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明公开

EP2899816A1 Method and device for time synchronization of picosecond and subpicosecond laser pulses 审中-公开
标题翻译： Verfahren und Vorrichtung zur Zeitsynchronisierung von Pikosekunden- und Subpikosekunden-Laserpulsen
公开(公告)号：EP2899816A1
公开(公告)日：2015-07-29
申请号：EP14466004.0
申请日：2014-01-27
申请人： Fyzikální ústav AV CR, v.v.i.
发明人： Batysta, Frantisek , Antipenkov, Roman , Naylon, Jack Alexander , Green, Jonathan Tyler , Bakule, Pavel , Novák, Jakub
IPC分类号： H01S3/13 , H01S3/00 , G01J11/00 , H01S3/23
CPC分类号： H01S3/0014 , G01J11/00 , H01S3/005 , H01S3/0092 , H01S3/1305 , H01S3/1307 , H01S3/2308 , H01S3/2391
摘要： The method and device for the time synchronization of picosecond and sub-picosecond laser pulses by means of a feedback loop based on measurement of the relative delay of the pulses of the signal and pump laser beam, using their interaction in a nonlinear medium, where the partial laser beams intended for synchronization control are uncoupled (1a/1b) from the primary laser beams immediately before entering the interaction which is sensitive to pulse synchronization (A-B). The polarization plane of the uncoupled beams (2a/2b) is adjusted with regard to the subsequent optical elements and one of the polarization components of one of the partial beams is delayed in a fixed and defined manner (3τ). Two polarization components of both partial beams, corresponding to the selected type of OPA interaction, are then together and synchronously directed to at least one anisotropic nonlinear medium exhibiting the OPA phenomenon (4x/4y) in which the partial signal beam is amplified and the idler wave is generated. The measuring element then measures and compares the individual intensities of both pulse polarization components of the signal wave and/or idler wave (5x/5y) and based on this evaluation, the feedback loop for the synchronization is implemented (A~B). From a laser oscillator (1) a chirped femtosecond probe pulse (8) is derived as well as pump pulse (9). The jitter stabilisation between these two pulses is performed with the help of a controlled delay line (4) and the pump pulse is amplified in a subsequent regenerative amplifier (2). Part of the amplified pump pulse (10) and the probe pulse is directed to a OP-CPA (3). The remainder is directed to a jitter stabilisation system (6). This system comprises a MZI for control of the ratio of the two polarisation components of the amplified pump pulse which are subsequently overlapped with the probe pulse in an OPA and the intensity of the generated idler is used as a parameter to stabilse the relative delay between the amplified pump pulse and the probe pulse by control of the pump pulse delay line (4).
摘要翻译：通过使用它们在非线性介质中的相互作用，基于信号和泵浦激光束的脉冲的相对延迟的测量，通过反馈回路来对皮秒和次皮秒激光脉冲进行时间同步的方法和装置，其中用于同步控制的部分激光束在紧接着进入对脉冲同步（AB）敏感的相互作用之前与主激光束分离（1a / 1b）。关于随后的光学元件调整非耦合光束（2a / 2b）的偏振平面，并且以固定和限定的方式（3Ä）延迟一个部分光束的偏振分量之一。对应于选定类型的OPA相互作用的两个部分光束的两个偏振分量然后在一起并且同步地指向至少一个表现出部分信号光束被放大的OPA现象（4x / 4y）的各向异性非线性介质，并且惰轮产生波。然后，测量元件测量并比较信号波和/或惰轮（5x / 5y）的两个脉冲偏振分量的各个强度，并且基于该评估，实现用于同步的反馈回路（A〜B）。从激光振荡器（1）得到啁啾飞秒探针脉冲（8）以及泵浦脉冲（9）。这两个脉冲之间的抖动稳定是借助受控延时线（4）进行的，泵浦脉冲在后续再生放大器（2）中被放大。放大的泵浦脉冲（10）的一部分和探针脉冲被引导到OP-CPA（3）。剩余部分被引导到抖动稳定系统（6）。该系统包括用于控制放大的泵浦脉冲的两个偏振分量的比率的MZI，其随后与OPA中的探针脉冲重叠，并且使用所产生的惰轮的强度作为参数来稳定相位延迟通过泵浦脉冲延迟线（4）的控制，放大泵浦脉冲和探针脉冲。

IPRDB

热门服务

关于我们

友情链接

联系方式