Material jet printing of transparent ceramic Yb:YAG planar waveguides

Seeley, Zachary M.; Phillips, Ian R.; Rudzik, Thomas J.; Cherepy, Nerine J.; Drobshoff, Alexander D.; Payne, Stephen A.

doi:10.1364/ol.420504

Material jet printing of transparent ceramic Yb:YAG planar waveguides

Journal Article · Fri May 07 00:00:00 EDT 2021 · Optics Letters

DOI:https://doi.org/10.1364/ol.420504· OSTI ID:1810648

^[1]; Phillips, Ian R. ^[1]; Rudzik, Thomas J. ^[1]; ^[1]; Drobshoff, Alexander D. ^[1]; Payne, Stephen A. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

A new, to the best of our knowledge, 3D additive manufacturing technique utilizing particle-loaded ink jet printing to fabricate transparent ceramic Yb:YAG planar waveguides for laser gain media was demonstrated. Rheological optimization of YAG particle-loaded inks resulted in successful droplet formation and printing resolution. Planar waveguides composed of a Yb:YAG guide encased in undoped YAG cladding were printed with guide thicknesses ranging between 25 and 350 µm and consolidated to high optical quality via solid-state sintering. Sufficiently low optical (1–3%/cm) and intermodal scatter allowed single-mode propagation with a core/clad index difference of

Δ n \sim 5.0 \times 10^{- 4}

(corresponding to 3 at.% Yb). The waveguides were cladding-pumped longitudinally with a 940 nm diode array resulting in 23.6% slope efficiency in 2 ms pulsed operation.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1810648

Alternate ID(s):: OSTI ID: 1781924

Report Number(s):: LLNL-JRNL--818899; 1029346

Journal Information:: Optics Letters, Journal Name: Optics Letters Journal Issue: 10 Vol. 46; ISSN 0146-9592

Publisher:: Optical Society of America (OSA)Copyright Statement

Country of Publication:: United States

Language:: English

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