New Step by Step Map For KGW Crystal
New Step by Step Map For KGW Crystal
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Later on, an investigation about the spectral obtain curve of Yb:KGW in the key amplifier will probably be performed below cryogenic temperature evolution from seventy seven K to three hundred K. The Performing temperature will likely be managed to comprehend broader gain bandwidth and fewer shift within the central wavelength of the leading amplifier.
Concurrently, a shorter laser wavelength is usually received; it is feasible to work having a quantum defect very well below one%. As being a consequence, the warmth era is often so tiny that this partly compensates the lower thermal conductivity.
-switched method. The bandwidth while in the orthogonal orientation was clearly Considerably broader. The calculated Fourier completely transform restricted pulse duration was as short as sub-a hundred and sixty fs. Under the configuration where The 2 crystals were being positioned in the exact same orientation, Along with the seed input, the amplified pulse bandwidth was only 3 nm with a hundred and eighty μJ Electrical power when it broke the dichroic mirrors.
]. Etalon insertion would result in additional decline, even so, time-to-time optimization would introduce the risk of ingredient hurt and instability towards the procedure. A nonlinear regenerative amplifier could specifically produce pulses that has a duration as little as 97 fs in addition to a spectral bandwidth of 19 nm[
One other was placed with its Np -axis parallel With all the s-polarized route. A comparison was made involving a configuration While using the crystals placed in a similar orientation (
KGW (potassium gadolinium tungstate) is actually a crystal that is usually utilised as being a Raman crystal in Raman spectroscopy. It's really a colorless, transparent crystal that has a superior Raman scattering effectiveness and a solid Raman spectrum, which makes it appropriate for A variety of Raman apps.
The spectral measurements of filament-induced luminescence suggest that scintillating Attributes of supplies could possibly be readily studied applying femtosecond close to-infrared light supply by way of multiphoton excitation inside the filamentation routine, which will allow easy separation of excitation and emission wavelengths and lower possibility of optical hurt.
The two-pump laser could supply nearly one hundred twenty W electric power. Somewhere around 60% of the maximum pump power was used inside our experiment considering the small overall performance of your dichroic here mirrors. Underneath this twin-crystal configuration, our cavity supports a 100 W pump electric power enter, as reviewed in Portion two.2. Superior-good quality dichroic mirrors will likely be made use of Down the road, and laser pulses might be stretched to an extended pulse period.
Despite the fact that BGO, GGG, YSO, LSO and LYSO often serve as laser hosts37, They are really mostly discovered as productive scintillators, whose scintillation Attributes are researched rather well38. Nevertheless, the nonlinear optical Houses of these crystals and so their likely to function nonlinear supplies for SC generation particularly, and almost every other experiments concerning nonlinear propagation of intensive femtosecond laser pulses, remain extremely badly examined. To date, GGG, LT23,25 and YSO24 ended up only sketchily tested for SC generation with Ti:sapphire laser pumping, on the other hand, to the best of our expertise, Not one of the investigated materials had been examined with Yb-laser pumping, especially for what problems their performance at incredibly superior (tens to numerous kHz) pulse repetition costs.
Tungstates are inclined to possess significant Raman coefficients (�?Raman scattering). Consequently, they're able to make significant Raman achieve at average optical intensities. It is possible to make use of the laser crystal alone as a Raman converter.
Figure eight Intra-cavity pulse amplification course of action monitored by an oscilloscope. The heart beat underwent an unsaturated amplification as a result of mirror destruction limitation.
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