The fill factor of the prepared linear array is about(72.7%,) the threshold current and slope efficiency of the prepared devices are(24 A) and(1.25 W/A) respectively under QCW operation condition of(100 Hz) repetitive frequency and(200 μs) pulse width,a maximum electrical-optical conversion efficiency of 51% has been achieved.
P(VDF-TrFE)copolymer film was used for sensing film of 16 X 1 integrated pyroelectric linear array. The film electric constant and dielectric loss are 12. 6 and 0.01,respectively after poling applied 70 kV/mm electric field.
A Nd∶YVO 4 laser at 1342 nm end pumped by a high power linear array fiber coupled diode laser is reported. An output power of 3.22 W at 1342 nm was obtained from x=0.7 of atomic fraction Nd doped YVO 4 laser with 13.30 W of incident pump power, corresponding to a slope efficiency of 25.5%.
The peak wavelength of the semiconductor laser(LD) linear array with the materials is 939.5 nm,the full width at half maximum(FWHM) is 2.3 nm,the peak output power is 65 W (400 μs,drive current 75 A),at the 10% duty cycle,and the slop efficiency is 1 W/A,the threshold current density is 185 W/cm~2, the wall-plug efficiency can reach 42%.
The wavelength of the semiconductor laser linear array made of these materials is 940.5nm, the CW output power is 37.7W (45A, 2.0V), the slop efficiency is 0.99W/A (75%), the electric-optical conversion is over 45%, and the threshold current density is 117A/cm~2 . The semiconductor laser of such wavelength is an ideal pumping source for Yb: YAG solid stated lasers.
The peak wavelength of the semiconductor laser linear array is 900nm, the full width at half maximum (FWHM) smaller than 4 nm, the peak output power near 60W (1000us, 13Hz, drive current 87A), and the slope efficiency is 0.6W/A.
Estimates of the efficiency of this method depending on the size of a vertical linear array are presented.
Concentration of energy in a single mode emitted in the water layer by a vertical linear array
Generation of a single normal wave by a vertical linear array in the water layer
The possibility of the acoustic energy emission into a single normal wave by a vertical linear array in a homogeneous water layer is considered for the case of the array aperture being smaller than the layer thickness.
Equation for the envelope of the field in a linear array of semiconductor lasers and an analysis of nonlinear effects