The Single Best Strategy To Use For KYW Crystal

The Single Best Strategy To Use For KYW Crystal

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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is quite huge in comparison with that of Yb:YAG. This allows for broad wavelength tunability and for much shorter pulse durations from manner-locked lasers. Values perfectly underneath one hundred fs are already attained with passive mode locking.

This one of a kind characteristic of ultrafast pulses allows nonlinear optical interaction with tissue at minimal All round exposure, and drives purposes for example deep-tissue multiphoton microscopy and substantial-precision eye surgery

time. Crystals of the compound melts congruently at 1007 oC, even so melt crystallization of high quality crystal is difficult because of phase changeover at ~920 oC. The top seeded Option approach from

Coloration-coded reflectivity of a Bragg mirror for a perform of wavelength and angle on the incident beam.

Optical layout of the laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output from the radiation, WP is really a 50 percent-wave plate, CL can be a collimating lens, FL is often a concentrating lens, AE is surely an active element made from an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC is the output mirror, and SAM can be a semiconductor saturable-absorber mirror.

Before the development of Nd:YAG, Nd3+:CaWO4 was an important scarce-earth-doped laser gain medium. It was actually Employed in the primary continually running crystal laser.

FIG. 1. Optical layout of a laser with immediate pumping While using the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output

Tungstates have a tendency to own superior Raman coefficients (�?Raman scattering). Therefore, they will deliver considerable Raman attain at reasonable optical intensities. It is feasible to use the laser crystal alone as being a Raman converter.

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By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to very similar sizes of these chemical elements nearly 100% of Yb-doping might be realized.

The thermal conductivity of frequent double tungstates is with the order to 3–four W/(K m) �?which isn't lousy in contrast with other laser crystals (Whilst several periods under for YAG), and fairly huge compared Together with the thermal conductivity get more info of standard glasses.

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At the same time, a shorter laser wavelength could be received; it can be done to work having a quantum defect effectively underneath one%. To be a consequence, the heat generation may be so modest this partly compensates the decreased thermal conductivity.