The Basic Principles Of LGS Switch Crystal
The Basic Principles Of LGS Switch Crystal
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wherever n includes nx and ny, the refractive indices together the X- and Y- directions as light propagates in an optically Lively crystal along the Z- route.
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Using an optically Energetic langasite (LGS) crystal because the electro-optic Q-switch, we demonstrate an economical Q-switched laser that has a repetition amount of 200 kHz. According to the theoretical analysis with the conversation in between optical exercise and electro-optic house, the optical activity with the crystal has no influence on the birefringence through Q-switching In the event the quarter wave plate used was rotated to align Along with the polarization path. Which has a Nd:LuVO4 crystal possessing a big emission cross-portion and a short fluorescence life time as the achieve medium, a secure LGS Q-switched laser was designed with common output ability of four.
when the above mild propagates in an optically Energetic crystal alongside the Z-route with size L and refractive index nx and ny along the X- and Y- directions, respectively, the polarization state may be expressed as:
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LGS crystal has an array of purposes: in addition to piezoelectric effect, optical rotation effect, its electro-optical result overall performance is also quite excellent, LGS Pockels Cells have significant repetition frequency, huge part aperture, slim pulse width, substantial electrical power, ultra-very low temperature along with other conditions are well suited for LGS crystal EO Q -switch. We applied the EO coefficient of γ 11 for making LGS Pockels cells, and chosen its larger factor ratio to decrease the 50 percent-wave voltage of LGS Electro-optical cells, which can be appropriate for the electro-optical tuning of all- Good-condition laser with better electricity repetition prices.
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To spotlight the influence of optical exercise on the birefringence, the polarization condition could be simplified to:
The polarization state of proper-handed and remaining-handed circularly polarized gentle can be expressed as32:
By rotating the quarter wave plate, the electro-optic crystal with optical exercise can make electro-optic modulation much like those crystals without optical action, including KD*P29 and BBO36. In comparison Together with the “even transit time”30 design, which happens to be referred to as follows: the light propagates in the LGS crystal alongside the Z direction and afterwards alongside the -Z path so as to do away with the outcome of optical activity inside the laser cavity30, the present analyzed “odd transit time�?design necessitates just the rotation of a quarter wave plate Hence simplifying the laser cavity configuration.
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