Fascination About KGW Crystal
Fascination About KGW Crystal
Blog Article
PDF Please pick a format to save. By using this assistance, you agree that you're going to only hold articles for personal use, and will never brazenly distribute them by using Dropbox, Google Generate or other file sharing providers Remember to validate that you choose to take the terms of use. Terminate
Whilst ytterbium-doped laser attain media typically show a little quantum defect, ytterbium-doped tungstates allow for for especially tiny values. For example, a 1030-nm Yb:YAG laser would normally be pumped about 940 nm, Whilst Yb:KGW or Yb:KYW can be most proficiently pumped around 981 nm.
A not-for-revenue Corporation, IEEE is the entire world's largest specialized Expert Corporation devoted to advancing technological know-how for the advantage of humanity.
In combination with its use for a Raman crystal, KGW can be Employed in other optical purposes, for example in laser methods and as a scintillator in professional medical imaging.
The datasets utilised and/or analysed in the course of the current research available from your corresponding author on acceptable request.
The comparison with glasses is acceptable since the significant obtain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
The other was positioned with its Np -axis parallel Along with the s-polarized path. A comparison was created in between a configuration With all the crystals positioned in the same orientation (
The merged obtain is complex and should be calculated underneath unique pumping disorders due to quasi-3-stage technique behavior of the Yb-doped achieve medium. The blueshift, with a person peak from 1037 nm beneath the exact same crystal placement orientation to 1035 nm under the orthogonal crystal placement orientation, could result with the reabsorption losses at a protracted wavelength while in the crystal in which the laser polarization is parallel to its Nm -axis, producing the gain at 1035 nm bigger than that at 1037 nm underneath orthogonal orientation.
We program to spice up the heartbeat Electricity to higher than forty mJ in two-stage multi-move amplifiers, similar to a obtain aspect of 20. In Every single amplifier, we will likely undertake two cascaded crystals positioned less than orthogonal orientation to lessen the thermal load on each crystal and compensate to the get-narrowing result.
The 2-pump laser could provide approximately 120 W electric power. Close to 60% of the most pump electricity was used in our experiment thinking about the lower general performance from the dichroic mirrors. Below this dual-crystal configuration, our cavity supports a one hundred W pump electricity enter, as reviewed in Portion two.two. Significant-high-quality dichroic mirrors will probably be utilized Later on, and laser pulses will likely be stretched to a longer pulse duration.
The Martinez stretcher stretched the seed pulses to ~250 ps with 1600 grooves/mm grating. The enter on the stretcher (incident angle: 52°) and that of the compressor incident at the grating were being within the similar aspect; that's why, a slight angular tuning of your grating can be designed to obtain the very best compression result. In the compressor, the enter angle to the grating and the gap among the translation phase (S1) plus the transmission grating (TG) have been created to compensate for the stretcher dispersion and all dispersion released because of the components.
-switched laser output beneath the two crystal placement configurations. The black line denotes the configuration Together with the crystals placed in precisely the same orientation, whilst the red line is beneath the configuration of crystals put in orthogonal orientation.
This text continues to be cited by the following publications. This listing is generated depending on facts furnished by Crossref.
An example of this sort of behaviour is revealed in Fig. 7a. The character of spectral variations is highlighted in Fig. 7d, which displays how the SC spectrum to the prolonged-wavelength side shrinks noticeably, from 1800 nm to 1450 nm, just immediately after eight minutes of publicity time within a stationary sample. LT crystal shown to some degree better lengthy-expression efficiency: at pulse repetition fees of up to a hundred kHz no narrowing on both side from the SC spectrum was detected. However, quick narrowing with the SC spectrum in LT crystal was observed after the very first five minutes of Procedure when the heart beat repetition amount was set at 200 kHz (facts not proven). In contrast to the above mentioned supplies, BGO and GGG shown fantastic SC technology performances with no spectral adjustments at a pulse repetition fee of 200 kHz, as attested by the time number of SC spectra in BGO and GGG, shown in Fig. 7b and c, respectively. Figure 7e and file define get more info identical styles of SC spectra in the beginning and at the conclusion of 1 hour-lasting measurement in both resources.