Examine This Report on KGW Crystal
Examine This Report on KGW Crystal
Blog Article
]. Due to limited storage time, Ti:sapphire is typically pumped by frequency-doubled Nd:YAG or Nd:glass strong-point out lasers, which ends up in a cumbersome and complex process with superior Price tag. Compared with regular CPA laser techniques, the OPCPA method can attain a shorter pulse length and a better peak electric power.
We use cookies to tell apart you from other buyers also to present you with a better knowledge on our Sites. Close this information to just accept cookies or find out how to deal with your cookie options.
A not-for-income organization, IEEE is the planet's largest specialized Expert Business devoted to advancing technology for the benefit of humanity.
For that reason There may be minor flexibility for optimizing the dispersion payment outcome. Sub-two hundred fs pulses may be envisioned that has a broader bandwidth seed input. Thanks to the twin-crystal configuration, the laser cavity provides a close to diffraction limited laser beam with M
-switched mode. The bandwidth inside the orthogonal orientation was clearly A lot broader. The calculated Fourier change constrained pulse duration was as brief as sub-160 fs. Under the configuration wherever The 2 crystals had been placed in the identical orientation, With all the seed input, the amplified pulse bandwidth was only three nm with one hundred eighty μJ Power when it broke the dichroic mirrors.
The calculated Slice-off wavelengths at the limited-wavelength facet are in step with the final pattern of blue-shifted spectral broadening within the bandgap of nonlinear content. Many of the nonlinear components manufactured sensible red-shifted spectral broadenings underneath problems of optimal pump pulse energies, with the most important crimson-shift exceeding 2000 nm measured in GGG crystal. Our benefits discovered that GGG and BGO (which also experienced the lowest supercontinuum era threshold) supply durable, optical destruction-totally free overall performance at a laser repetition price of two hundred kHz, suggesting that these supplies are good alternate options to YAG and KGW for reduced threshold, significant ordinary electricity supercontinuum era from the around- and limited-wave infrared spectral ranges. We also shown that scintillating Homes of bulk materials may be conveniently examined within the filamentation regime, by way of multiphoton excitation employing near-infrared femtosecond laser pulses.
As a Component of GDPR policy, we use cookies to ensure that we supply you with the most effective knowledge on our Web site.
The blended attain is sophisticated and should be measured underneath different pumping problems due to the quasi-a few-amount program actions of your Yb-doped achieve medium. The blueshift, with a single peak from 1037 nm underneath the similar crystal placement orientation to 1035 nm under the orthogonal crystal placement orientation, could result in the reabsorption losses at a lengthy wavelength from the crystal where by the laser polarization is parallel to its Nm -axis, producing the gain at 1035 nm larger than that at 1037 nm beneath orthogonal orientation.
Though BGO and LT generated the narrowest SC spectra (slightly under 1.five optical octaves), they may be considered as extremely interesting nonlinear components for broadband SC era with pumping at for a longer time laser wavelengths. Owing to its large nonlinearity, BGO exhibited the lowest SC era threshold (78 nJ) One of the investigated resources, which is 25 % reduce than in KGW and could be regarded as great nonlinear substance for quite very low-threshold SC era. The observed secure and durable harm-cost-free efficiency of BGO and GGG at 200 kHz pulse repetition price suggests that these nonlinear materials have a possible for SC generation at even higher, MHz, repetition premiums. Moreover, these materials offer SC radiation with a fantastic set of parameters which are essential for applications in substantial velocity spectroscopy and imaging that employ bulk-generated SC, see e.g.17,eighteen,19,twenty.
The two-pump laser could present up to 120 W electrical power. Somewhere around sixty% of the most pump power was applied in our experiment thinking of the low efficiency in the dichroic mirrors. Underneath this twin-crystal configuration, our cavity supports a one hundred W pump electric power enter, as talked over in Portion two.two. Superior-quality dichroic mirrors are going to be used in the future, and laser pulses will be stretched to an extended pulse length.
These resources may be used for frequency conversion in KGW Crystal lasers for extending of tuning vary. SRS in crystals is suitable with latest all-good-state technologies and gives a very simple, compact implies of frequency conversion.
The Yb:KGW laser process has a quasi-a few-level actions. The net obtain of your Yb:KGW crystal wasn't significant: many tens of roundtrips were needed to amplify the nanojoule seed to some millijoule amount. Consequently, the acquire-narrowing effect was unavoidable in Yb:KGW regenerative amplifiers.
Determine four Beam radius variation on The 2 crystals when changing the focal duration from the thermal lensing outcome.
The two energies are marked because of the dashed traces as well as their values are labeled during the plots. The identical attributes have been also observed in KGW and YAG crystals, whose spectral broadening dynamics are shown to get a comparison in Fig. 4.