A Simple Key For KGW Crystal Unveiled
A Simple Key For KGW Crystal Unveiled
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For a few programs, tungstates offer a mix of various useful Houses. Especially for passive manner locking, ytterbium-doped double tungstates are often remarkable to other media with regard to the combination of superior achieve bandwidth, huge cross-sections, and relatively excellent thermal properties �?Despite the fact that in Each and every specific willpower greater supplies may be identified.
Concurrently, a shorter laser wavelength might be obtained; it is possible to function that has a quantum defect nicely down below 1%. As a consequence, the warmth generation may be so small that this partly compensates the lessen thermal conductivity.
Its pump laser desires a short pulse period, a minimal time jitter, and smooth temporal and spatial distributions because of the intrinsic instantaneous procedure. So, the OPCPA procedure is much more challenging and high-priced.
]. Etalon insertion would produce additional reduction, however, time-to-time optimization would introduce the chance of ingredient hurt and instability towards the system. A nonlinear regenerative amplifier could instantly produce pulses with a length as little as ninety seven fs as well as a spectral bandwidth of 19 nm[
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At last, we investigated the prolonged-time period performances of SC generation in crystal samples beneath ideal website pumping situations at greater laser repetition fees. In doing so, the crystal samples were not translated and kept in a stationary placement with regard on the pump beam over the overall measurement. The illustrations illustrating robust extensive-time period performances of SC era in KGW and YAG crystals at superior laser repetition prices could be uncovered elsewhere. Additional specially, stable performance of KGW crystal at two MHz pulse repetition charge under really very similar pump beam focusing geometry was reported recently30, While YAG crystal demonstrated secure general performance for a number of hrs at 200 kHz pulse repetition charge even with really restricted concentrating in the pump beam (NA=0.085)32. The very long-time period overall performance checks in LSO, LYSO and YSO unveiled gradual narrowing on the SC spectra on the extensive-wavelength side that happened immediately after a particular publicity time and could be attributed towards the optical degradation of these supplies. As an example, in LSO, the onset of spectral narrowing was observed after (sim 20) minutes in a laser repetition charge of 10 kHz, even though at a laser repetition level of twenty kHz, stable SC generation general performance was observed just for about two min.
Request RP Photonics for any information concerning tungstate lasers, including femtosecond lasers and higher-ability lasers.
We developed a diode-pumped Yb:KGW regenerative amplifier since the entrance end with the kilohertz terawatt laser procedure. Broad bandwidth pulses ended up obtained by implementing twin crystals with different orientations of their optical axes[
相关工作得到了上海扬帆计划、国家重点研发计划、中国科学院战略性先导科技专项、国家自然科学基金项目、上海市优秀学术/技术带头人计划、上海市市级科技重大专项、中国科学院青年创新促进会的支持。（强场激光物理国家重点实验室供稿）
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