Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is quite large when compared with that of Yb:YAG. This allows for extensive wavelength tunability and for A great deal shorter pulse durations from mode-locked lasers. Values nicely under a hundred fs happen to be attained with passive method locking.
This distinctive attribute of ultrafast pulses allows nonlinear optical conversation with tissue at lower General exposure, and drives applications such as deep-tissue multiphoton microscopy and large-precision eye surgical treatment
We current a twin-crystal Yb:KGW laserthat iscapable to operate for a Q-switched oscillator with output electric power as much as 24 W and pulse length of twenty ns,or being a regenerative amplifier with output electrical power as much as 21 W and pulse period beneath two hundred fs right after compression of chirped pulses. Both lasers have exceptional beam high quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Display screen powerful peaks at 980 nm and 1030 nm, respectively, making certain productive Strength conversion and significant general performance in laser units.
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 in the radiation, WP is a fifty percent-wave plate, CL is actually a collimating lens, FL is a focusing lens, AE can be an active aspect produced from an Yb:KYW crystal, DM can be a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC would be the output mirror, and SAM is often a semiconductor saturable-absorber mirror.
Adhesion Check Compliant with MIL-C-675C navy benchmarks, an adhesion examination included implementing a tape that satisfies LT-ninety specifications on to the lens movie layer. The tape was affixed thoroughly after which you can eradicated vertically. This procedure was executed thrice, leading to no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and therefore click here are utilized as lasing supplies to make ultrashort (~ 100-two hundred fs) large energy pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser systems.
Tungstates tend to own substantial Raman coefficients (�?Raman scattering). As a result, they are able to make sizeable Raman attain at average optical intensities. It is possible to make use of the laser crystal alone being a Raman converter.
... at fifty percent-height had been generated inside of a learn oscillator with selfsynchronization in the axial modes, described inside our previously article. 21 The new edition in the laser, in contrast to that explained in our before write-up, used an Yb:KYW crystal by having an N pcut (optical axis N p in the index ellipsoid was parallel into the propagation route in the laser radiation), Using the polarization with the generated radiation directed alongside the N m axis.
... Don't just the posture of crystal in the cavity but additionally the amplification axis of crystal influences the laser operation tremendously, because the absorption and emission cross sections from the crystal are really distinct according to the orientation from the crystal.
When ytterbium-doped laser get media frequently show a small quantum defect, ytterbium-doped tungstates make it possible for for significantly compact values. For example, a 1030-nm Yb:YAG laser would normally be pumped around 940 nm, Whilst Yb:KGW or Yb:KYW can be most successfully pumped around 981 nm.
This tandem of attributes has much-achieving implications, particularly in the construction of compact still powerfull lasers.
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Request RP Photonics for any guidance about tungstate lasers, like femtosecond lasers and high-electric power lasers.