The smart Trick of KGW Crystal That No One is Discussing
The smart Trick of KGW Crystal That No One is Discussing
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]. As a result of brief storage time, Ti:sapphire is often pumped by frequency-doubled Nd:YAG or Nd:glass solid-state lasers, which leads to a cumbersome and complex method with significant Price tag. Compared with common CPA laser systems, the OPCPA system can obtain a shorter pulse period and a better peak ability.
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW may be very big in contrast with that of Yb:YAG. This permits for broad wavelength tunability and for A lot shorter pulse durations from method-locked lasers. Values nicely below 100 fs happen to be realized with passive method locking.
In its elemental type, potassium incorporates a silvery grey metallic visual appearance, but its compounds (for instance potassium hydroxide) tend to be more regularly Utilized in industrial and chemical apps.
-switched method. The bandwidth in the orthogonal orientation was Obviously A great deal broader. The calculated Fourier remodel restricted pulse period was as short as sub-160 fs. Under the configuration where The 2 crystals ended up placed in the exact same orientation, Using the seed input, the amplified pulse bandwidth was only 3 nm with 180 μJ Power when it broke the dichroic mirrors.
Amplified pulses using an Vitality earlier mentioned two.5 mJ could be anticipated by applying a greater pump ability to the regenerative amplifier and rendering it get the job done with the saturation degree. The laser fluence of ~one J/cm2 to the dichroic mirrors is believed for being under the injury threshold of higher-good quality dielectric-coated mirrors.
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The black line denotes the configuration While using the crystals put in the identical orientation, although the red line is underneath the configuration of crystals placed in orthogonal orientation.
Even though BGO and LT generated the narrowest SC spectra (slightly below one.five optical octaves), they may be viewed as really interesting nonlinear components for broadband SC era with pumping at extended laser wavelengths. Owing to its large nonlinearity, BGO exhibited the bottom SC era threshold (78 nJ) among the investigated supplies, which is 25 % reduce than in KGW and could be regarded as excellent nonlinear product for quite minimal-threshold SC technology. The noticed steady and durable destruction-free of charge efficiency of BGO and GGG at two hundred kHz pulse repetition rate indicates that these nonlinear supplies have a potential for SC era at even higher, MHz, repetition premiums. Moreover, these elements offer SC radiation with a fantastic list of parameters which can be important for apps in higher speed spectroscopy and imaging that employ bulk-created SC, see e.g.17,eighteen,19,20.
The two-pump laser could present nearly 120 W ability. About sixty% of the maximum pump electric power was applied within our experiment contemplating the lower functionality of your dichroic mirrors. Beneath this twin-crystal configuration, our cavity supports a 100 W pump power input, as discussed in Area two.two. Large-good quality dichroic mirrors will be utilized Later on, and laser pulses is going to be stretched to an extended pulse period.
These components can be used for frequency conversion in lasers for extending of tuning vary. SRS in crystals is suitable with recent all-strong-point out know-how and gives click here a quite simple, compact suggests of frequency conversion.
-switched laser output beneath the two crystal placement configurations. The black line denotes the configuration While using the crystals positioned in precisely the same orientation, when the purple line is under the configuration of crystals put in orthogonal orientation.
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