Biomedical Engineering Reference
In-Depth Information
9
Adaptive Optics System
Alignment and Assembly
9.1. Introduction....................................................................................... 151
9.2. Adaptive.Optics.Optical.System.Design.Considerations............152
9.3. Optical.Aberrations..........................................................................155
9.4. Optomechanics..................................................................................157
Optical.Mechanical.Hardware. •. Optical.Tables.and .
Breadboards. •. Mounts,.Rods,.Posts,.and.Holders. •. Optical .
Subsystem,.Cages,.Rails,.and.Stages
9.5. Optical.Alignment............................................................................160
Using.a.Full-Size.Mechanical.Layout. •. Use.Mechanical.
Constraints. •. Divide.into.Functioning.Segments. •. Establish.Optical .
Axis.and.Line.of.Sight. •. Align.the.Science.Camera.Last. •. Multiple.
Wavelengths
9.6. Alignment.Tools................................................................................ 162
Point.Source.with.a.Single-Mode.Optical.Fiber. •. Alignment.
Sources. •. Shearing.Interferometer. •. Autocollimator. •. Viewing .
Card. •. Iris.(Diaphragm). • . Machine.Target/Fiducially
9.7. AO.System-Speciic.Considerations..............................................166
Deformable.Mirrors.on.Kinematic.Mounts. •. Shack-Hartmann.
Wavefront.Sensor.Subassembly. •. Pupil.Plane.Camera. •. Photomultiplier .
Tube.Pinhole.Adjustment
9.8. Assembly.Procedures.for.an.AO.System........................................ 170
9.9. Optical.System.Performance.Improvement/
.
Diana C. Chen
Lawrence Livermore
National Laboratory
Troubleshooting................................................................................. 171
9.10.
Understanding.Alignment.Penalties..............................................172
9.1 introduction
his. chapter. is. written. for. biologists. and. technicians. needing. fundamental. knowledge. and. practical.
techniques.to. achieve.alignment.of. an. instrument. exploiting. adaptive.optics. (AO).. It. provides. proce-
dures.on.how.to.realize.an.optical.system.design.from.concepts.to.a.working.AO.system.in.the.labora-
tory.environment.
Optical. alignment. means. adjusting. the. positions. of. sources,. optical. components,. and. detectors. to.
build.an.optical.system.as.designed. 1-3 AO.systems 4-6 .quite.oten.involve.multiple.sources,.many.optical.
components,.and.several.optical.function.paths . .Getting.an.AO.system.working.efectively.can.take.sev-
eral.iterations,.where.errors.and.misalignment.are.slowly.worked.out..Optical.system.designs.and.align-
ments.have.been.discussed.in.many.excellent.topics. 7-11 .Readers.are.recommended.to.read.the.referenced.
topics.if.they.are.interested.in.gaining.more.knowledge.on.the.topic.
151
 
 
 
 
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