KGW Crystal Things To Know Before You Buy
KGW Crystal Things To Know Before You Buy
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Sooner or later, an investigation around the spectral get curve of Yb:KGW in the principle amplifier will probably be carried out under cryogenic temperature evolution from 77 K to three hundred K. The Doing the job temperature is going to be controlled to comprehend broader gain bandwidth and fewer shift within the central wavelength of the primary amplifier.
Figure seven reveals the calculated dispersion compensation result. The compressed pulse period is all-around 185 fs in the event the duration of enter pulses is 150 fs. The discrepancy involving them will be considerably diminished with an extended pulse enter since uncompensated superior-get dispersion matters much less for more time pulses. This configuration was utilized to display the compressibility of our amplified pulses within the preliminary phase of our full process. Sooner or later we'd undertake a grating-pair compressor for high-quality compensation for high-buy dispersion.
In contrast, the seed laser can be amplified to in excess of one mJ beneath the orthogonal orientation configuration.
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Comparison of spectral energy densities of supercontinua made from the conditions of optimal pumping from the investigated products.
While BGO and LT made the narrowest SC spectra (a bit less than 1.5 optical octaves), they may be considered as extremely beautiful nonlinear materials for broadband SC technology with pumping at extended laser wavelengths. Owing to its large nonlinearity, BGO exhibited the lowest SC era threshold (seventy eight nJ) Amongst the investigated materials, which can be 25 % decreased than in KGW and will be regarded as fantastic nonlinear material for extremely minimal-threshold SC era. The noticed secure and sturdy damage-absolutely free performance of BGO and GGG at 200 kHz pulse repetition fee indicates that these nonlinear products have a possible for SC technology at even higher, MHz, repetition prices. In addition, these supplies supply SC radiation with a superb set of parameters which can be essential for programs in large speed spectroscopy and imaging that employ bulk-created SC, see e.g.seventeen,18,19,20.
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A multi-go main amplifier will further boost the Electrical power to higher than forty mJ. We are going to use cryogenically cooled Yb:KGW technological know-how to restrain the thermal outcome. Two phases of compression will probably be employed immediately after amplification. The 1st stage requires a common Treacy-style compressor, and will compress the heartbeat duration to down below three hundred fs with the performance of around 70%. The 2nd phase requires a gas-crammed multi-pass mobile[
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