Everything about KYW Crystal
Everything about KYW Crystal
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW may be very large compared with that of Yb:YAG. This enables for extensive wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values effectively under one hundred fs are actually achieved with passive mode locking.
This one of a kind characteristic of ultrafast pulses permits nonlinear optical conversation with tissue at minimal overall publicity, and drives programs like deep-tissue multiphoton microscopy and superior-precision eye surgical procedures
We current a twin-crystal Yb:KGW laserthat iscapable to work to be a Q-switched oscillator with output energy around 24 W and pulse size of 20 ns,or being a regenerative amplifier with output electric power nearly 21 W and pulse period down below two hundred fs following compression of chirped pulses. Each lasers have exceptional beam top quality with beam parameter M2
Shade-coded reflectivity of the Bragg mirror to be a purpose of wavelength and angle with the incident beam.
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers having fiber output. To forestall spectral narrowing in the course of amplification and the corresponding lengthening in the amplified pulse when it can be compressed, a combination of two Yb:KYW crystals have been used, Using the spectral maxima in the amplification shifted relative to each other and with spectral profiling with the amplified radiation.
Prior to the development of Nd:YAG, Nd3+:CaWO4 was a vital rare-earth-doped laser gain medium. It was actually Employed in the initial repeatedly functioning crystal laser.
FIG. one. Optical format of the laser with direct pumping While using the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output
Tungstates are inclined to obtain high Raman coefficients (�?Raman scattering). Consequently, they're able to make major Raman attain at average optical intensities. It is achievable to make use of the laser crystal itself as being a Raman converter.
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... Don't just the position of crystal within the cavity but additionally the amplification axis of crystal impacts the laser operation significantly, because the absorption and emission cross sections of the crystal are quite distinctive in accordance with the orientation of your crystal.
The thermal conductivity of typical double tungstates is of your purchase to three–four W/(K m) �?which is not terrible in comparison with other laser crystals (Even though quite a few instances less than for YAG), and reasonably large when compared with the thermal conductivity of normal Eyeglasses.
Li2WO4-WO3 flux was properly used minimizing The expansion temperature underneath 900 oC. In keeping with one crystal x-ray measurements, the crystal corresponds to the P2/n Room group.
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