The best Side of KGW Crystal
The best Side of KGW Crystal
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When ytterbium-doped laser get media generally exhibit a little quantum defect, ytterbium-doped tungstates allow for for significantly smaller values. For example, a 1030-nm Yb:YAG laser would Ordinarily be pumped all around 940 nm, whereas Yb:KGW or Yb:KYW may be most efficiently pumped around 981 nm.
Determine 8 Intra-cavity pulse amplification process monitored by an oscilloscope. The pulse underwent an unsaturated amplification as a result of mirror damage limitation.
In its elemental variety, potassium incorporates a silvery grey metallic appearance, but its compounds (which include potassium hydroxide) are more often Employed in industrial and chemical applications.
In distinction, the seed laser can be amplified to above 1 mJ underneath the orthogonal orientation configuration.
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At last, we investigated the lengthy-term performances of SC generation in crystal samples below optimal pumping disorders at bigger laser repetition premiums. In doing this, the crystal samples weren't translated and kept inside of a stationary placement with respect for the pump beam during the complete measurement. The illustrations illustrating sturdy extended-expression performances of SC technology in KGW and YAG crystals at superior laser repetition prices may be identified somewhere else. Extra precisely, secure performance of KGW crystal at two MHz pulse repetition charge less than very comparable pump beam concentrating geometry was reported recently30, whereas YAG crystal shown steady general performance for numerous several hours at two hundred kHz pulse repetition amount In spite of incredibly limited concentrating with the pump beam (NA=0.085)32. The extensive-time period efficiency exams in LSO, LYSO and YSO disclosed gradual narrowing in the SC spectra on the very long-wavelength side that occurred following a certain publicity time and could be attributed into the optical degradation of those products. For example, in LSO, the onset of spectral narrowing was noticed soon after (sim twenty) minutes at a laser repetition amount of ten kHz, although in a laser repetition level of twenty kHz, secure SC era general performance was noticed just for roughly two min.
Talk to RP Photonics for almost any tips regarding tungstate lasers, including femtosecond lasers and superior-electric power lasers.
The 2-pump laser could present nearly 120 W energy. Around 60% of the utmost pump electric power was used in our experiment contemplating the minimal functionality on the dichroic mirrors. Beneath this dual-crystal configuration, our cavity supports a one hundred W pump electrical power input, as mentioned in Section 2.two. Superior-excellent dichroic mirrors are going to be made use of Down the road, and KGW Crystal laser pulses are going to be stretched to an extended pulse length.
相关工作得到了上海扬帆计划、国家重点研发计划、中国科学院战略性先导科技专项、国家自然科学基金项目、上海市优秀学术/技术带头人计划、上海市市级科技重大专项、中国科学院青年创新促进会的支持。（强场激光物理国家重点实验室供稿）
Tungstates are inclined to have substantial Raman coefficients (�?Raman scattering). Hence, they're able to deliver substantial Raman achieve at average optical intensities. It is possible to utilize the laser crystal itself being a Raman converter.
The scattered photons have another wavelength and Electrical power than the incident photons, which makes a Raman spectrum.
The origin with the element's name arises from the English phrase 'potash,' indicating pot ashes, as well as Arabic phrase qali