Partially Coherent Imaging With DeFocus Aberration
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Some Imaging Applications Need To Consider Electric Field Coherency And Optical Aberrations To Predict Performance With High Accuracy.
Here, Diffraction Spot Images Are Formed On A Tilted Plane Assuming Incoherent, Partially Coherent, And Fully Coherent E-Fields With Varying Amounts Of Defocus Aberration.
A Hypothetical Optic Is Trying To Form The Same Image (Green Oval) In All Frames. A Transparent, Black Box is Drawn For Reference.
The Aberrations From An Actual Optical Design Are Easily Accommodated And Alter These Results Accordingly.
Vertical Scaling Is Log10 And All Frames Are Normalized By The Diffraction Limited Case.
Partially Coherent Imaging With Varying Source Size
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As The Incoherent Source Size Gets Smaller, The Spatial Coherence Extent Increases.
Therefore Making A Smaller Spot Is Not Simply A Matter Of Choosing A Smaller Source Size.
A Hypothetical, Diffraction Limited Optic Is Forming A Different Image Size (Green Oval) In All Frames. A Transparent, Black Box is Drawn For Reference.
As The Source Gets Smaller, The Partially Coherent Result Becomes More Like The Fully Coherent Result.
Actual Optical System Aberrations Are Easily Accommodated. Vertical Scaling Is Log10.
Partially Coherent Imaging With Varying Wavelength
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Holding The Source Dimensions Constant, The Illumination Wavelength Is Varied.
As The Wavelength Gets Longer, The Extent Of The Spatial Coherence Increases Linearly.
A Hypothetical, Diffraction Limited Optic Is Forming An Image Of The Same Geometry (Green Oval) In All Frames. A Transparent, Black Box is Drawn For Reference.
Actual Optical System Aberrations Are Easily Accommodated. Vertical Scaling Is Log10 And Normalization Is Performed On A Per Frame Basis.
Partially Coherent Imaging With Varying Source Obscuration Ratios
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Holding The Outer Source Dimension Constant, The Central Portion Is Obscured By A Homologous Shape.
The Source Image And Partial Coherence Function Are Simultaneously Affected.
A Hypothetical, Diffraction Limited Optic Is Forming An Image Of A Different Source Geometry (Green Oval) In All Frames. A Transparent, Black Box is Drawn For Reference.
Actual Optical System Aberrations Are Easily Accommodated. Vertical Scaling Is Log10 And Normalization Is Performed On A Per Frame Basis.