KGW Crystal Things To Know Before You Buy
KGW Crystal Things To Know Before You Buy
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Down the road, an investigation over the spectral achieve curve of Yb:KGW in the most crucial amplifier will likely be done less than cryogenic temperature evolution from 77 K to 300 K. The Doing the job temperature are going to be controlled to comprehend broader obtain bandwidth and less change within the central wavelength of the principle amplifier.
Figure seven reveals the calculated dispersion compensation result. The compressed pulse period is close to 185 fs in the event the length of input pulses is a hundred and fifty fs. The discrepancy involving them will likely be noticeably diminished with an extended pulse input because uncompensated substantial-get dispersion matters less for for a longer time pulses. This configuration was accustomed to exhibit the compressibility of our amplified pulses in the preliminary stage of our whole method. Sooner or later we would undertake a grating-pair compressor for good compensation for prime-purchase dispersion.
-switched method. The bandwidth during the orthogonal orientation was Plainly A great deal broader. The calculated Fourier transform restricted pulse duration was as short as sub-160 fs. Under the configuration wherever The 2 crystals ended up positioned in a similar orientation, While using the seed enter, the amplified pulse bandwidth was only 3 nm with 180 μJ Electricity when it broke the dichroic mirrors.
]. Etalon insertion would result in supplemental reduction, nevertheless, time-to-time optimization would introduce the chance of component hurt and instability to the process. A nonlinear regenerative amplifier could straight supply pulses having a period as low as 97 fs in addition to a spectral bandwidth of 19 nm[
Later on, We are going to adopt a laser seed that has a broader spectral bandwidth and use an acousto-optical programmable dispersive filter to modulate the seed’s spectrum to create comprehensive use from the acquire bandwidth of our regenerative amplifier.
Comparison of spectral Electricity densities of supercontinua manufactured within the conditions of optimum pumping during the investigated supplies.
Hence, with a further enhancement within our regenerative amplifier, 2 mJ compressed pulses can be predicted, without the more info need of harming any element inside our compressor.
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The Martinez stretcher stretched the seed pulses to ~250 ps with 1600 grooves/mm grating. The input from the stretcher (incident angle: 52°) and that on the compressor incident within the grating had been in the very same facet; hence, a slight angular tuning in the grating may be designed to obtain the most effective compression end result. While in the compressor, the input angle within the grating and the distance in between the translation phase (S1) as well as transmission grating (TG) have been intended to compensate with the stretcher dispersion and all dispersion launched through the supplies.
-switched laser output beneath the two crystal placement configurations. The black line denotes the configuration with the crystals positioned in precisely the same orientation, although the red line is beneath the configuration of crystals placed in orthogonal orientation.
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