5 Simple Techniques For PPLN Crystal
5 Simple Techniques For PPLN Crystal
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Note: The problems threshold in a very poled region might be decreased In case you are creating seen wavelengths. Normally boost the pump ability slowly, while checking the beam for any distortions or simply a unexpected fall in electricity.
GWU-Lasertechnik provides all standard nonlinear crystals like LBO, BBO and KTP which has a broad a number of technical specs. Beside the very well-founded supplies, modern crystals like CLBO or BiBO with exceptional Houses for e. g. deep-UV era or large-ability ultrashort pulse lasers are offered. It doesn't matter if particular person parts for R & D uses are necessary or Price tag-successful figures in compact, medium or substantial batches with in-time shipping and delivery for that generation line are necessary: GWU’s dedicated assistance really helps to locate the very best core elements on your application.
g. in the shape of “grey monitoring�? This kind of phenomena are specially frequent for Procedure with ultraviolet light-weight. Note that a gradual degradation also can direct into fast catastrophic destruction by way of extreme heat era.
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They show very good homogeneity around big volumes and have a significant destruction threshold, but are hygroscopic and possess a minimal nonlinearity.
Non-linear Optical (NLO) crystals give an enormously versatile Remedy for making new wavelengths from current, off-the-shelf laser resources. The optical wavelength spectrum is used by a big and regularly increasing assortment of purposes, from manufacturing of health care lasers, quantum networking & computing by way of to environmental sensing and also quite a few Other individuals.
Nonetheless, in certain substance for instance KTP, a grey line is noticed once the crystal is irradiated by obvious or UV gentle. The induced absorption is attributed to polarons, where by carriers may possibly in that circumstance be captured e.g. by Ti4+ ions or by Fe3+ impurities in the KTP. Gray tracking is generally reversible and disappears inside a handful of hrs right after irradiation. Its toughness is determined by the crystal good quality and so around the fabrication method, and also some crucial parameters including the pulse length and pulse repetition level.
Crystal life span can be strongly dependent on the material quality, Though certain degradation phenomena seem like intrinsic constraints of the fabric.
Just about every crystal has an linked pump acceptance bandwidth which happens to be inversely depending on length, so crystal size is an important factor when choosing a crystal. This acceptance bandwidth is due to the team velocity mismatch between the interacting waves.
When QPM bulk system offers advantages of bigger ability and larger aperture purposes, QPM waveguide (WG) can be used to even more increase nonlinear wave mixing performance by tightly confining the laser depth in excess of prolonged propagation distance, as revealed in determine four.
2W SHG output ability over a duration of 2000hrs, without symptoms of damage to your crystal and no proof of beam distortion because of photorefraction.
GWU-Lasertechnik has a lot more than thirty many years of knowledge in distributing laser crystals. Decide on GWU to get pleasure from our wide information and in-subject working experience!
In the case of ultrashort pulses the significant team velocity mismatch enforces the use of a shorter crystal, which calls for substantial optical intensities for just a given conversion performance.
By picking click here the suitable poling period, the QPM wavelength may be modified to match specific software specifications. This adaptability in wavelength conversion permits effective and precise tuning of generated or converted frequencies for spectroscopic investigations.