Applied Industrial Optics

26 July 2021 – 30 July 2021
Optica Virtual Event - Eastern Daylight/Summer Time (UTC - 04:00)

Light and the Material Industrial Complex (W1A)

Presider: Turan Erdogan, Plymouth Grating Laboratory, Inc.

Light and the Material Industrial Complex (W1A)

Presider: Turan Erdogan, Plymouth Grating Laboratory, Inc.
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8:30 - 9:00
(UTC - 04:00)

Emerging Sensing and Metrology Applications for a New Class of Chip Lasers (W1A.1)
Presenter: David Lancaster, University of South Australia

Ultra-fast laser inscription of waveguides in rare-earth doped fluorozirconate glass can realise high-efficiency chip lasers that can be tailored to operate in discrete bands throughout the visible to the mid-infrared. Chip lasers display high quality laser characteristics, with a key advantage of being mass manufacturable by computer numerical control techniques. Emerging niches for chip technology include GHz+ mode-locked lasers, single frequency lasers, and dual frequency combs.

Authors:David Lancaster, University of South Australia

8:30 - 9:00
(UTC - 04:00)

Emerging Sensing and Metrology Applications for a New Class of Chip Lasers (W1A.1)
Presenter: David Lancaster, University of South Australia

Ultra-fast laser inscription of waveguides in rare-earth doped fluorozirconate glass can realise high-efficiency chip lasers that can be tailored to operate in discrete bands throughout the visible to the mid-infrared. Chip lasers display high quality laser characteristics, with a key advantage of being mass manufacturable by computer numerical control techniques. Emerging niches for chip technology include GHz+ mode-locked lasers, single frequency lasers, and dual frequency combs.

Authors:David Lancaster, University of South Australia

9:00 - 9:30
(UTC - 04:00)

Tunable Dual-Wavelength Silicon-Photonic Lasers (W1A.2)
Presenter: Xue Huang, Acacia Communications, Inc

We have developed an integrated silicon-photonic laser which emits two tunable wavelengths simultaneously. With independent and continuous wavelength tuning in C-band, it is demonstrated that these two wavelengths can support highly correlated channels for Dense Wavelength Division Multiplexing (DWDM), or provide self-pumping in Erbium-Doped Fiber Amplifier (EDFA). Potential applications include dense-channel communication, mm-Wave/THz generation, and arbitrary waveform generator.

Authors:Xue Huang, Acacia Communications, Inc / Christopher Doerr, Acacia Communications, Inc / Chuan Qin, Acacia Communications, Inc / John Heanue, Acacia Communications, Inc / Ninghui Zhu, Acacia Communications, Inc / Dinh Ton, Acacia Communications, Inc / Binbin Guan, Acacia Communications, Inc / Shaoliang Zhang, Acacia Communications, Inc / Ying Zhao, Acacia Communications, Inc

9:00 - 9:30
(UTC - 04:00)

Tunable Dual-Wavelength Silicon-Photonic Lasers (W1A.2)
Presenter: Xue Huang, Acacia Communications, Inc

We have developed an integrated silicon-photonic laser which emits two tunable wavelengths simultaneously. With independent and continuous wavelength tuning in C-band, it is demonstrated that these two wavelengths can support highly correlated channels for Dense Wavelength Division Multiplexing (DWDM), or provide self-pumping in Erbium-Doped Fiber Amplifier (EDFA). Potential applications include dense-channel communication, mm-Wave/THz generation, and arbitrary waveform generator.

Authors:Xue Huang, Acacia Communications, Inc / Christopher Doerr, Acacia Communications, Inc / Chuan Qin, Acacia Communications, Inc / John Heanue, Acacia Communications, Inc / Ninghui Zhu, Acacia Communications, Inc / Dinh Ton, Acacia Communications, Inc / Binbin Guan, Acacia Communications, Inc / Shaoliang Zhang, Acacia Communications, Inc / Ying Zhao, Acacia Communications, Inc

9:30 - 10:00
(UTC - 04:00)

High Performance Mid-Infrared SLEDs and VCSELs – Design Challenges and Innovations (W1A.3)
Presenter: Fatima Toor, University of Iowa

The Global Positioning System (GPS) is the standard source of navigation and positioning for civilian applications and a source for military systems. GPS jammers and other forms of signal denial are becoming increasingly cheap and effective; making GPS failure a reality and a critical risk for navigation and localization applications. Polaris Sensor Technologies, Inc. has developed a technology called Sky Polarization Azimuth Sensing System (SkyPASS) which utilizes a polarization map of the sky and the position of the sun to determine heading (azimuth) with a confidence metric that predicts the RMS heading error to within ±2 milliradians (0.1 degrees). While constraining heading to high accuracy greatly reduces position drift, the celestial technology utilized in SkyPASS, in combination with a novel Celestial Positioning Algorithm (CPA) developed by Polaris, can provide an estimate of fixed global position by constraining position error using SkyPASS and INS outputs. SkyPASS commercialization efforts including manufacturing, export control, and Intellectual Property considerations will be discussed.

Authors:Fatima Toor, University of Iowa

9:30 - 10:00
(UTC - 04:00)

High Performance Mid-Infrared SLEDs and VCSELs – Design Challenges and Innovations (W1A.3)
Presenter: Fatima Toor, University of Iowa

This talk will present the research and development efforts of Firefly Photonics LLC, a technology startup based in Iowa, towards developing high performance superlattice light emitting diodes (SLEDs) and vertical cavity surface emitting lasers (VCSELs) that emit mid-infrared (MIR) light (3-5 µm). We are developing both single element devices as well as megapixel arrays and will present some of our innovative approaches to develop these MIR emitters.

Authors:Fatima Toor, University of Iowa

10:00 - 10:30
(UTC - 04:00)

Relevance of Modeling Laser-Material Interactions in the Industrial Context (W1A.4)
Presenter: Wolfgang Schulz, RWTH Aachen Univ

Implementing a virtual production system is challenging due to machine specific interactions, uncertainties and unknowns. The theory of design oriented thinking adapted for manufacturing favors fast iteration in digitized design cycles instead of optimising the model quality in one step. A virtual production system is seen to become a set of “digital shadows” emulating relevant properties of the underlying techno-physical systems with controlled error instead of apparently more comprehensive time expensive numerical simulations. Different model reduction techniques are demonstrated resulting in “digital shadows” able to generate dense data by millions of runs within acceptable calculation time.

Current applications like bonding of metals to plastic in lightweight construction, long pulse drilling of turbine components, ultra-short pulse ablation and structuring of display masks and filters as well as additive manufacturing are demonstrators for the usability of “digital shadows."

Mathematical and physical reasoning leads to at least 4 most relevant model reduction techniques enabling fast simulations running on smart devices. Namely, diffusion present in momentum and heat transfer makes applicable spectral theory. In particular, it is shown how spectral theory reveals the Inertial Manifold of an underlying PDE system, describing the long time limit of the dynamical solution. Machine specific calibration of the model parameters of such “digital shadows” is used instead of using unknown material parameters which finally enables digitalization of implicit know-how of experts within restricted regions of the machining parameter space in laser processing.

Authors:Wolfgang Schulz, RWTH Aachen Univ

10:00 - 10:30
(UTC - 04:00)

(Withdrawn) Relevance of Modeling Laser-Material Interactions in the Industrial Context (W1A.4)
Presenter: Wolfgang Schulz, RWTH Aachen Univ

Implementing a virtual production system is challenging due to machine specific interactions, uncertainties and unknowns. The theory of design oriented thinking adapted for manufacturing favors fast iteration in digitized design cycles instead of optimising the model quality in one step. A virtual production system is seen to become a set of “digital shadows” emulating relevant properties of the underlying techno-physical systems with controlled error instead of apparently more comprehensive time expensive numerical simulations. Different model reduction techniques are demonstrated resulting in “digital shadows” able to generate dense data by millions of runs within acceptable calculation time.

Current applications like bonding of metals to plastic in lightweight construction, long pulse drilling of turbine components, ultra-short pulse ablation and structuring of display masks and filters as well as additive manufacturing are demonstrators for the usability of “digital shadows."

Mathematical and physical reasoning leads to at least 4 most relevant model reduction techniques enabling fast simulations running on smart devices. Namely, diffusion present in momentum and heat transfer makes applicable spectral theory. In particular, it is shown how spectral theory reveals the Inertial Manifold of an underlying PDE system, describing the long time limit of the dynamical solution. Machine specific calibration of the model parameters of such “digital shadows” is used instead of using unknown material parameters which finally enables digitalization of implicit know-how of experts within restricted regions of the machining parameter space in laser processing.

Authors:Wolfgang Schulz, RWTH Aachen Univ