CeFO Publications

@article{Chen2022,

title = {Femtosecond-laser-enabled simultaneous figuring and finishing of glass with a subnanometer optical surface},

author = {Gong Chen and Jie Qiao},

url = {https://opg.optica.org/ol/fulltext.cfm?uri=ol-47-15-3860&id=481949},

year  = {2022},

date = {2022-07-26},

urldate = {2022-07-26},

journal = {Optics Letters},

volume = {47},

issue = {15},

pages = {3860-3863},

abstract = {We demonstrate simultaneous figuring and surface finishing

of glass using a femtosecond laser. For the first time, to

the best of our knowledge, we have achieved deterministic

material removal with nanometer precision and maintained

sub-nanometer surface roughness without inducing

any mid-spatial-frequency errors to the initial surface. A

dynamic pulse propagation model is established to predict

the interaction process, including plasma generation

and surface temperature. The interactive modeling and the

experiments enable the selection of a set of laser parameters

to achieve controllable optical figuring and finishing.

This demonstration shows the potential for using femtosecond

lasers for advanced freeform optic forming, finishing,

and reduction of detrimental mid-spatial-frequency errors,

and laser-ablation-based patterning used for fabrication of

integrated photonics and lasers.},

keywords = {CeFO, fabrication},

pubstate = {published},

tppubtype = {article}

}

@article{TAYLOR2019,

title = {Femtosecond laser polishing of germanium},

author = {LAUREN L. TAYLOR, JING XU, MICHAEL POMERANTZ, THOMAS

R. SMITH, JOHN C. LAMBROPOULOS, AND JIE QIAO},

url = {https://doi.org/10.1364/OME.9.004165},

year  = {2019},

date = {2019-10-02},

journal = {Optical Materials Express},

volume = {9},

number = {11},

pages = {4165-4177},

abstract = {Freeform optics can reduce the cost, weight, and size of advanced imaging systems,

but it is challenging to manufacture the complex rotationally asymmetric surfaces to optical

tolerances. To address the need for disruptive, high-precision sub-aperture forming and finishing

techniques for freeform optics, we investigate an alternative, non-contact polishing methodology

using femtosecond lasers, combining modeling, experiments, and demonstrations. Femtosecondlaser-

based polishing of germanium was investigated using an experimentally-validated twotemperature

model of laser/germanium interaction to guide the understanding and selection of

laser parameters to achieve near-nonthermal ablation for polishing and figuring. For the first time

to our knowledge, model-guided femtosecond laser polishing of germanium was successfully

demonstrated, achieving precision material removal while maintaining single-digit nanometer

optical surface quality. The demonstrated femtosecond-laser-based polishing technique lays the

foundation for semiconductor optics polishing/fabrication using femtosecond lasers and opens a

viable path for high-precision, complex sub-aperture optical polishing tasks on various materials.},

keywords = {CeFO manufacturing, CEFO metrology, fabrication, Freeform surfaces, manufacturing, Mid-Spatial Frequency error},

pubstate = {published},

tppubtype = {article}

}

@article{Aryan2019,

title = {Predictive models for the Strehl ratio of diamond-machined optics},

author = {Hamidreza Aryan and Kevin Liang and Miguel A. Alonso and Thomas J. Suleski},

url = {https://doi.org/10.1364/AO.58.003272},

doi = {https://doi.org/10.1364/AO.58.003272},

year  = {2019},

date = {2019-03-26},

journal = {Applied Optics},

volume = {58},

pages = {3272-3276},

keywords = {CeFO, fabrication, Mid-Spatial Frequency error},

pubstate = {published},

tppubtype = {article}

}

@article{Xu2017,

title = {Design, fabrication, and testing of convex reflective diffraction gratings },

author = {D. Xu and J. Owen and J. Papa and J. P. Reimers and T. J. Suleski and J. R. Troutman and M. A. Davies and K. P. Thompson and J. P. Rolland},

url = {https://www.osapublishing.org/oe/abstract.cfm?uri=oe-25-13-15252},

year  = {2017},

date = {2017-06-26},

journal = {Optics Express},

volume = {25},

number = {13},

pages = {15252-15268},

abstract = {The convex reflective diffraction grating is an essential optical component that lends itself to various applications. In this work, we first outline the design principles of convex diffraction gratings from wavefront quality and efficiency perspectives. We then describe a unique fabrication method that allows for the machining of convex diffraction gratings with variable groove structure, which is extendable to rotationally non-symmetric convex diffraction grating substrates. Finally, we demonstrate two quantitative wavefront measurement methods and respective experimental validation.},

keywords = {CeFO, fabrication, metrology},

pubstate = {published},

tppubtype = {article}

}