The best Side of KGW Crystal
The best Side of KGW Crystal
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Figure 8 Intra-cavity pulse amplification course of action monitored by an oscilloscope. The heartbeat underwent an unsaturated amplification due to mirror problems limitation.
In addition to its use like a Raman crystal, KGW can be Utilized in other optical applications, including in laser units and as a scintillator in professional medical imaging.
-switched mode. The bandwidth during the orthogonal orientation was Evidently A great deal broader. The calculated Fourier rework constrained pulse duration was as brief as sub-a hundred and sixty fs. Underneath the configuration exactly where The 2 crystals ended up positioned in the identical orientation, While using the seed enter, the amplified pulse bandwidth was only 3 nm with 180 μJ Electrical power when it broke the dichroic mirrors.
The comparison with glasses is appropriate since the big gain bandwidth allows e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
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Lastly, we investigated the very long-phrase performances of SC era in crystal samples under optimum pumping circumstances at increased laser repetition premiums. In doing so, the crystal samples weren't translated and stored inside of a stationary posture with regard on the pump beam throughout the total measurement. The illustrations illustrating sturdy extended-phrase performances of SC technology in KGW and YAG crystals at large laser repetition premiums could possibly be identified somewhere else. Far more particularly, steady general performance of KGW crystal at 2 MHz pulse repetition fee underneath quite very similar pump beam concentrating geometry was noted recently30, whereas read more YAG crystal demonstrated stable performance for numerous hrs at 200 kHz pulse repetition fee even with extremely restricted concentrating in the pump beam (NA=0.085)32. The long-expression performance exams in LSO, LYSO and YSO unveiled gradual narrowing of your SC spectra around the extensive-wavelength facet that transpired following a certain exposure time and could be attributed for the optical degradation of these materials. As an illustration, in LSO, the onset of spectral narrowing was observed soon after (sim twenty) minutes in a laser repetition amount of 10 kHz, though at a laser repetition level of 20 kHz, steady SC generation general performance was observed just for roughly two min.
Inquire RP Photonics for just about any tips about tungstate lasers, which include femtosecond lasers and high-energy lasers.
We designed a diode-pumped Yb:KGW regenerative amplifier since the front finish of the kilohertz terawatt laser system. Wide bandwidth pulses ended up acquired by applying twin crystals with diverse orientations of their optical axes[
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Each energies are marked with the dashed strains as well as their values are labeled within the plots. The similar characteristics were being also noticed in KGW and YAG crystals, whose spectral broadening dynamics are shown to get a comparison in Fig. 4.