Laser-processing apparatus, methods of operating the same, and methods of processing workpieces using the same
Numerous embodiments are disclosed. In one, a laser-processing apparatus includes a positioner arranged within a beam path along which a beam of laser energy is propagatable. A controller may be used to control an operation of the positioner to deflect the beam path within first and second primary angular ranges, and to deflect the beam path to a plurality of angles within each of the first and second primary angular ranges. In another, an integrated beam dump system includes a frame; and a pickoff mirror and beam dump coupled to the frame. In still another, a wavefront correction optic includes a mirror having a reflective surface having a shape characterized by a particular ratio of fringe Zernike terms Z4 and Z9. Many more embodiments are disclosed.
1 . A system, comprising:
a first optical component operative to transmit a beam of laser energy, wherein the first optical component is susceptible to thermal lensing induced by the transmitted beam of laser energy;
a wavefront compensation optic configured to correct wavefront aberrations in the beam of laser energy transmitted by the first optical component and attributable to the thermal lensing; and
an optical relay system arranged and configured to relay an image of the first optical component to the wavefront compensation optic,
wherein the optical relay system is configured such that a size of the image of the first optical component at the wavefront compensation optic is different from a size of the image of the first optical component at the first optical component.
2 . The system of claim 1 , wherein the size of the image of the first optical component at the wavefront compensation optic is larger than the size of the image of the first optical component at the first optical component.
3 . The system of claim 1 , wherein the wavefront compensation optic is configured to transmit the beam of laser energy.
4 . The system of claim 1 , wherein the wavefront compensation optic is configured to reflect the beam of laser energy.
5 . The system of claim 1 , wherein the wavefront compensation optic includes a static wavefront compensation optic.
6 . The system of claim 1 , wherein the wavefront compensation optic includes a dynamic wavefront compensation optic.
7 . The system of claim 1 , further comprising:
a second optical component operative to transmit the beam of laser energy,
wherein the optical relay system is arranged and configured to relay an image of the first optical component at the wavefront compensation optic to the second optical component.
8 . The system of claim 7 , wherein the optical relay system is configured such that the size of the image of the first optical component at the wavefront compensation optic is the same as a size of the image of the first optical component at the second optical component.
9 . The system of claim 7 , wherein
the wavefront compensation optic is configured to reflect the beam of laser energy, and
the optical relay system includes:
a first optical relay including two lenses, wherein the first optical relay is configured to relay the image of the first optical component to the wavefront compensation optic, and
a second optical relay including two lenses, wherein the second optical relay is configured to relay the image of the first optical component at the second plane wavefront compensation optic to the second optical component.
10 . The system of claim 9 , wherein the first optical relay and the second optical relay share a common lens.
11 . The system of claim 9 , wherein the optical relay system further comprises at least one mirror arranged between two lenses of the second optical relay.
12 . The system of claim 9 , wherein
the first optical component includes an acousto-optic (AO) cell operative to transmit a first beam of laser energy along a first-order beam path and to transmit a second beam of laser energy along a zeroth-order beam path,
the second optical component is arranged such that the zeroth-order beam path of the AO cell of the first optical component is incident upon the second optical component, and
the optical relay system includes a lens arranged in the zeroth-order beam path of the first optical component and wherein the lens is not part of the first optical relay or the second optical relay.
13 . The system of claim 12 , wherein the second optical component includes an acousto-optic (AO) cell.
14 . The system of claim 7 , wherein
the first optical component includes an acousto-optic (AO) cell operative to transmit a first beam of laser energy along a first-order beam path and to transmit a second beam of laser energy along a zeroth-order beam path, and
the second optical component is arranged such that the zeroth-order beam path of the AO cell of the first optical component is incident upon the second optical component.
15 . The system of claim 14 , further comprising at least one optical component arranged and configured to direct the zeroth-order beam path through the optical relay system.
16 . The system of claim 7 , further comprising a beam dump arranged between the first optical component and the second optical component,
wherein the first optical component includes an acousto-optic (AO) cell operative to transmit a first beam of laser energy along a first-order beam path and to transmit a second beam of laser energy along a zeroth-order beam path,
wherein the zeroth-order beam path is terminated by the beam dump, and
wherein the second optical component is arranged such that the first-order beam path of the AO cell of the first optical component is incident upon the second optical component.