The KYW Crystal Diaries
The KYW Crystal Diaries
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, can be a remarkable substance that plays a significant function in laser technological innovation. Its Most important function would be to create ultrashort pulses of light, spanning just a few hundred femtoseconds.
We present a twin-crystal Yb:KGW laserthat iscapable to work as being a Q-switched oscillator with output electricity approximately 24 W and pulse duration of twenty ns,or as a regenerative amplifier with output power around 21 W and pulse length down below two hundred fs following compression of chirped pulses. The two lasers have outstanding beam quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Exhibit powerful peaks at 980 nm and 1030 nm, respectively, making sure efficient Power conversion and high functionality in laser techniques.
Optical format of a laser with direct pumping Together with the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output of your radiation, WP is often a 50 percent-wave plate, CL is a collimating lens, FL is usually a concentrating lens, AE is an Energetic factor made out of an Yb:KYW crystal, DM is often a spherical dichroic mirror, M1-M6 would be the cavity mirrors, OC will be the output mirror, and SAM is often a semiconductor saturable-absorber mirror.
Adhesion Exam Compliant with MIL-C-675C military criteria, an adhesion take a look at involved applying a tape that satisfies LT-ninety technical specs on to the lens movie layer. The tape was affixed thoroughly and after that taken out vertically. This method was carried out three times, causing no blistering or peeling.
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Tungstates are likely to acquire superior Raman coefficients (�?Raman scattering). Therefore, they are able to create considerable Raman obtain at moderate optical intensities. It can be done to utilize the laser crystal by itself like a Raman converter.
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... Not just the place of crystal within the cavity and also the amplification axis of crystal has an effect on the laser operation tremendously, since the absorption and emission cross sections from the crystal are really different according to the orientation of the crystal.
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Concurrently, a shorter laser wavelength might be attained; it is feasible to work with a quantum defect very well beneath one%. Like a consequence, the heat technology may be so compact that this partly compensates the reduce thermal conductivity.