Abstract
A technique is presented to produce any desired partially coherent Schell-model source using a single phase-only liquid-crystal spatial light modulator (SLM). Existing methods use SLMs in combination with amplitude filters to manipulate the phase and amplitude of an initially coherent source. The technique presented here controls both the phase and amplitude using a single SLM, thereby making the amplitude filters unnecessary. This simplifies the optical setup and significantly increases the utility and flexibility of the resulting system. The analytical development of the technique is presented and discussed. To validate the proposed approach, experimental results of three partially coherent Schell-model sources are presented and analyzed. A brief discussion of possible applications is provided in closing.
Highlights
For the past decade, the propagation and scattering of partially coherent light has been a very active area of research
A brief discussion of possible applications is provided in closing
These techniques can roughly be divided into two groups—those which exploit the van CittertZernike theorem32,50–52 and most relevant to this work, those which use diffusers or spatial light modulators (SLMs) to produce Gaussian Schell-model (GSM) sources
Summary
The propagation and scattering of partially coherent light has been a very active area of research. Numerous published articles exist predicting the polarization, coherence, and beam shape of partially coherent light after propagating through free space and random media or scattering from deterministic and random objects/media.. A vast majority of this work has focused on generating Gaussian Schell-model (GSM) sources and their many variants.. A vast majority of this work has focused on generating Gaussian Schell-model (GSM) sources and their many variants.28–30,39–51 These techniques can roughly be divided into two groups—those which exploit the van CittertZernike theorem and most relevant to this work, those which use diffusers or spatial light modulators (SLMs) to produce GSM sources. A vast majority of this work has focused on generating Gaussian Schell-model (GSM) sources and their many variants. These techniques can roughly be divided into two groups—those which exploit the van CittertZernike theorem and most relevant to this work, those which use diffusers or spatial light modulators (SLMs) to produce GSM sources.
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