The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is quite large as opposed with that of Yb:YAG. This allows for huge wavelength tunability and for Substantially shorter pulse durations from mode-locked lasers. Values nicely beneath one hundred fs have already been reached with passive mode locking.
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We current a dual-crystal Yb:KGW laserthat iscapable to operate as being a Q-switched oscillator with output electric power nearly 24 W and pulse length of 20 ns,or for a regenerative amplifier with output energy as many as 21 W and pulse length down below 200 fs following compression of chirped pulses. Both lasers have excellent beam excellent with beam parameter M2
Coloration-coded reflectivity of the Bragg mirror like a function of wavelength and angle from the incident beam.
Optical layout of a laser with direct pumping Along with the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output on the radiation, WP is a half-wave plate, CL is actually a collimating lens, FL can be a concentrating lens, AE is really an Lively aspect made from an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 will be the cavity mirrors, OC will be the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
Adhesion Test Compliant with MIL-C-675C navy standards, an adhesion examination associated making use of a tape that meets LT-ninety technical specs on to the lens movie layer. The tape was affixed totally after which you can taken out vertically. This method was carried out thrice, causing no blistering or peeling.
FIG. one. Optical layout of the laser with immediate pumping With all the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output
A high brightnessQ-switched oscillator and regenerative amplifier based upon a twin-crystal Yb:KGW laser
For tungstates, the ytterbium doping focus can be quite high without sizeable quenching because the replaced ions have a really identical ion radius, plus the inter-ion distance is relatively substantial.
Nevertheless, after Nd3+:YAG turned commercially readily available, the here desire in CaWO4 dropped sharply. In later on yrs, specific other tungstate crystals started to appeal to a lot of consideration.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at place temperature were being measured. The emission spectrum and life time from the three File 4 excited condition had been established. Using conventional and modified Judd–Ofelt theories, the intensity parameters as well as the radiative lifetimes were being calculated and great agreement Along with the experimental effects was obtained for both of those theories.
Concurrently, a shorter laser wavelength is often acquired; it can be done to work using a quantum defect effectively below 1%. As a consequence, the heat technology is usually so tiny that this partly compensates the reduce thermal conductivity.