Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Howard J. Baker"'
Publikováno v:
Solid State Lasers XXVIII: Technology and Devices.
Autor:
Natalia Trela, Howard J. Baker, Roy McBride, Matthew Oren Currie, Eoin Murphy, Duncan John Walker, P. Blair
Publikováno v:
SPIE Proceedings.
The native shape of the single-mode laser beam used for high power material processing applications is circular with a Gaussian intensity profile. Manufacturers are now demanding the ability to transform the intensity profile and shape to be compatib
Publikováno v:
IEEE Journal of Quantum Electronics. 47:1336-1345
We present an efficient high-power planar waveguide laser consisting of a 2% doped Yb:YAG core with sapphire claddings. The planar waveguide is double-side pumped at 940 nm using two custom aberration-corrected diode laser stacks which are imaged dir
Publikováno v:
Applied Physics A. 103:1033-1046
New experimental results in support of the universal mechanism of “cold” laser ablation for machining of various commercial green ceramic materials (LTCC) are presented in this paper. The “cold” ablation model was mathematically formulated an
Publikováno v:
Applied Physics A. 91:341-348
This paper reports calculations of predicted values of the key process parameters associated with “cold” laser ablation of ceramic materials in the green state. A model for material removal of composite organic/ceramic materials is proposed and v
Publikováno v:
IEEE Journal of Quantum Electronics. 43:669-675
A planar waveguide laser using a large-core Nd:YAG waveguide and face-pumping by diode bars has produced a multimode power up to 160 W, with direct-contact water-cooling across the largest faces of the waveguide in the lateral direction. A method is
Publikováno v:
IEEE Transactions on Components and Packaging Technologies. 30:254-263
Single pulse drilling of copper foils and copper-coated dielectric circuit board materials, relevant to applications in micro-electronics packaging, has been investigated here using an enhanced peak power CO 2-laser. The plasma generated during coppe
Publikováno v:
Optics & Laser Technology. 39:814-820
Multi-mode rate equations have been developed to investigate mode competition in high-power acousto-optically Q-switched planar waveguide lasers. The mode competition arises from coupling effects and temporal losses in the transform between guided mo
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 13:638-646
A planar waveguide laser operating in a negative branch unstable resonator is Q-switched by an acoustooptic modulator in a new configuration, providing effective, high-speed switching. The laser using a 200-mum Nd:YAG core, face pumped by 10 laser di
Publikováno v:
Applied Physics A. 84:267-270
We report a novel “cold” self-cleaning technique for processing low temperature co-fired ceramic (LTCC) in the “green” state at high resolution and high speed, using a low power carbon dioxide laser. A particle ejection process involving both