Fascination About KGW Crystal
Fascination About KGW Crystal
Blog Article
To save this text to the Dropbox account, be sure to decide on one or more formats and make sure that you choose to comply with abide by our usage policies.
PDF You should find a structure to save lots of. By using this support, you agree that you'll only hold information for private use, and will not likely overtly distribute them via Dropbox, Google Push or other file sharing products and services Please verify that you just acknowledge the conditions of use. Terminate
The attain bandwidth e.g. of Yb:KGW and Yb:KYW is very substantial as opposed with that of Yb:YAG. This enables for vast wavelength tunability and for A lot shorter pulse durations from manner-locked lasers. Values very well below one hundred fs are obtained with passive mode locking.
Hence There exists little independence for optimizing the dispersion payment impact. Sub-200 fs pulses is often expected using a broader bandwidth seed enter. Because of the dual-crystal configuration, the laser cavity provides a close to diffraction constrained laser beam with M
-switched manner. The bandwidth from the orthogonal orientation was Plainly much broader. The calculated Fourier change constrained pulse duration was as small as sub-one hundred sixty fs. Beneath the configuration in which the two crystals had been positioned in the exact same orientation, Along with the seed enter, the amplified pulse bandwidth was only three nm with 180 μJ energy when it broke the dichroic mirrors.
This is the preview of membership information, log in through an institution to examine accessibility. Entry this information
Sooner or later, We are going to adopt a laser seed which has a broader spectral bandwidth and apply an acousto-optical programmable dispersive filter to modulate the seed’s spectrum to make entire use on the achieve bandwidth of our regenerative amplifier.
Scenario Reports of selected vital technologies invented or co-invented by American Things in only the 1st two decades of the century
Though BGO and LT made the narrowest SC spectra (marginally fewer than one.five optical octaves), they might be seen as pretty attractive nonlinear supplies for broadband SC era with pumping at longer laser wavelengths. Owing to its big nonlinearity, BGO exhibited the bottom SC generation threshold (78 nJ) Amongst the investigated resources, which can be 25 % lower than in KGW and will be regarded as outstanding nonlinear substance for incredibly lower-threshold SC technology. The noticed stable and durable problems-cost-free overall performance of BGO and GGG at two hundred kHz pulse repetition charge indicates that these nonlinear materials have a possible for SC generation at even better, MHz, repetition costs. In addition, these supplies provide SC radiation with a superb set of parameters that are important for applications in large pace spectroscopy and imaging that employ bulk-created SC, see e.g.seventeen,eighteen,19,20.
The threshold Power for SC generation (hbox E _ textrm th ) was defined because the pump pulse Vitality, the place the blue-shifted spectral broadening immediately settles to a specific Slice-off wavelength that remains Pretty much constant even with additional boost of your pump pulse Electrical power. The optimum Power (hbox E _textrm decide ), was described as being the pump pulse Electricity, which generates the biggest purple-shifted spectral broadening prior to the onset of periodic modulation within the SC spectrum as a result of filament refocusing.
Despite the fact that BGO, GGG, YSO, LSO and LYSO often function laser hosts37, They're mainly recognized as effective scintillators, whose scintillation Houses are studied rather well38. On the other hand, the nonlinear optical Qualities of these crystals and so their opportunity to serve as nonlinear supplies for SC generation specifically, and any other experiments relating to nonlinear propagation of powerful femtosecond laser pulses, continue being more info very poorly analyzed. So far, GGG, LT23,25 and YSO24 ended up only sketchily analyzed for SC era with Ti:sapphire laser pumping, nevertheless, to the best of our understanding, none of the investigated resources ended up examined with Yb-laser pumping, especially for what fears their overall performance at really substantial (tens to hundreds of kHz) pulse repetition costs.
Springer Mother nature remains neutral regarding jurisdictional claims in released maps and institutional affiliations.
This information has become cited by the subsequent publications. This list is generated dependant on facts supplied by Crossref.
]. The twin-crystal configuration lowers the thermal load on Every single crystal whilst maintaining a substantial get, and facilitates the compensation of every one’s thermal lensing result. For that reason, the laser cavity can do the job with a substantial stability assortment more than the thermal lensing outcome variation.