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  RTP electro-optical Q switch large nonlinear optical coefficient – CRYLINK CLICK HERE RbTiOPO4(RTP) crystal is a kind of nonlinear optical crystal material with excellent comprehensive properties. RTP is currently the most used type of practical electro-optic crystals with high frequency repetition, high power and narrow pulse width laser Q switching. RTP electro-optical devices are not only used in laser micromachining and laser ranging, but also in major scientific exploration projects because of their excellent comprehensive performance. RbTiOPO4(RTP)—a crystal with large nonlinear optical coefficient, large electro-optical coefficient, high photoresist damage threshold and stable physical and chemical properties The growth temperature ranges from 950 °C to 800 °C and the growth period is usually between 45 and 60 days. As RTP is transparent from 0.4 to 3.5 μm, it can be used in multiple types of laser such as Er:YAG laser at 2.94 μm with fairly good efficiency. Bulk absorpti...

Er,Yb: Glass laser glass for eye-safe laser   of 1540nm or 1.5µm to 1.6µm As an eye-safe wavelength laser, 1540um, Er3+/Yb3+ co-doped phosphate glass lasers have attracted much attention for their compactness and low cost, such as laser generation and signal amplification because the wavelength of 1540nm is just at the position of the eye-safe and the fiber optic communication window. 1540nm lasers have used in ranging finder, radar, target recognition. Er3+/Yb3+ co-doped phosphate glass cooperate with passive Q-Switch crystal -co:spinel to get 1540nm pulse solid-state laser. Er3+ emission transition occurs within this wavelength range corresponding to the 4I13/2 →4I15/2. However, Er3+ absorption itself is too weak to allow direct pumping and so, energy transfers are required. The most ef fi cient ones are given by Yb3+ ions under absorption from the 2F7/2 → 2F5/2 transition, followed by energy transfer to the 4I11/2 Er3+ level and fast nonradiative transition to the Er3+  ...