High-fidelity holographic beam shaping with optimal transport and phase diversity
A phase-only spatial light modulator (SLM) provides a powerful way to shape laser beams into arbitrary intensity patterns but at the cost of a hard computational problem of determining an appropriate SLM phase. Here, we show that optimal transport methods can generate approximate solutions to this problem that serve as excellent initializations for iterative phase retrieval algorithms, yielding vortex-free solutions with superior accuracy and efficiency. Additionally, we show that analogous algorithms can be used to measure the intensity and phase of the input beam incident upon the SLM via phase diversity imaging. These techniques furnish flexible and convenient solutions to the computational challenges of beam shaping with an SLM.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Stanford U., Phys. Dept.
- Sponsoring Organization:
- US Department of Energy; USDOE
- Grant/Contract Number:
- 89243024CSC000002; AC02-07CH11359
- OSTI ID:
- 2512434
- Report Number(s):
- FERMILAB-PUB-24-0565-V
- Journal Information:
- Optics Express, Journal Name: Optics Express Journal Issue: 3 Vol. 33; ISSN 1094-4087; ISSN OPEXFF
- Publisher:
- Optical Society of AmericaCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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