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The VCSEL array chip was mounted on a diamond heat spreader, making the most of diamond’s very excessive thermal conductivity. In 2001, greater than 1 W CW power and 10 W pulsed energy at room temperature have been reported from a 19-element array. Greater than 2 W continuous-wave (CW) operation at -10 degrees Celsius heat-sink temperature was also reported in 1998 from a VCSEL array consisting of 1,000 elements, corresponding to a power density of 30 W/cm2. VCSELs. For Projectors for digital content more info on Projectors for digital content look into our own site. The excessive energy degree achieved was largely as a consequence of improvements in wall-plug efficiency and packaging. Moreover, at high aluminium concentrations, an oxide could be formed from AlGaAs, and Projectors for digital content this oxide can be used to limit the present in a VCSEL, enabling very low threshold currents. The oxidation rate of the oxide layer was highly dependent on the aluminium content.