Diamond membranes: platform for photonic and opto-mechanical applications
Hsin-Hui Huang, Gediminas Seniutinas, Haoran Mu, Nguyen Hoai An Le, Eulalia Puig Vilardell + 6 more
TLDR
Diamond membranes are explored for photonic/optomechanical applications, detailing IR dichroism, femtosecond laser cutting, and light distribution modeling.
Key contributions
- Identified 1-10 µm thick diamond membranes as a platform for photonic, quantum, and opto-mechanic devices.
- Characterized IR absorbance dichroism in diamond gratings, showing changes with grating period.
- Demonstrated femtosecond laser cutting for precise micro- and mm-scale structuring of diamond membranes.
- Modeled light intensity distribution in form-birefringent diamond, revealing polarization-dependent interference.
Why it matters
This research advances the use of diamond membranes for next-generation photonic and opto-mechanical devices. The detailed characterization and fabrication techniques provide crucial insights for developing high-performance components. This work is vital for applications across a broad spectral range.
Original Abstract
Diamond 1 - 10 micrometers thick membranes are platform for photonic, quantum and opto-mechanic devices with applications across UV-IR spectral ranges. IR characterization of diamond gratings in reflection and transmission showed a change of the IR absorbance dichroism between positive and negative when the grating period was 1-2 wavelengths (free space) including inside the region of the intrinsic diamond absorbance. Femtosecond laser cutting of micrometers-wide and mm-long structures are demonstrated by steps of carbonization > 0.4 J/cm2/pulse (1030 nm/200 fs) and oxidation of diamond membranes. Light intensity distribution inside form-birefringent diamond structure was modeled for a scaled-down structure and wavelength to reveal characteristic interference patterns for different polarizations.
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