Dr. Leif A. Johansson Profile

Dr. Leif A. Johansson

at Freedom Photonics LLC

SPIE Involvement:

Author

Publications (28)

Proceedings Article | 7 June 2024 Presentation + Paper

Presentation + Paper

Robust high-power single-mode semiconductor optical amplifiers at 1550nm for free space optical communications

Michelle Labrecque, Jenna Campbell, Allen Chu, Kevin McClune, Steven Estrella, Elliot Burke, Thomas Liu, Henry Garrett, Matthew Larkins, Sarah Kinney, Gordon Morrison, Leif Johansson, Milan Mashanovitch, Paul Leisher

Proceedings Volume 13029, 1302902 (2024) https://doi.org/10.1117/12.3014209

KEYWORDS: Eye, Optical amplifiers, Data communications, Amplitude modulation, Semiconductor optical amplifiers, Semiconductor lasers, Free space optics, Free space optical communications, Phase shift keying, Diodes

Read Abstract +

Proceedings Article | 6 June 2024 Presentation + Paper

Presentation + Paper

Enabling space-qualified opto-electronic systems through photonic wirebonding

Jes Sherman, Victoria Rosborough, Ruby Gans, Juan Ramirez, Don Kebort, Geoffrey Sitwell, Juergen Musolf, Henry Garrett, Tom Liu, Caleb McEwen, Trevor Cooper, Amin Nehrir, Gordon Morrison, Leif Johansson, Milan Mashanovitch

Proceedings Volume 13062, 1306206 (2024) https://doi.org/10.1117/12.3013559

KEYWORDS: Photonic integrated circuits, Vibration, Tunable lasers, Transmittance, Sensors, Laser radiation, Emission wavelengths, Optoelectronics, Laser irradiation

Read Abstract +

Proceedings Article | 13 March 2024 Presentation

Presentation

Photonic wire bonded extended cavity diode lasers on thin-film lithium niobate

Cornelis Franken, Rebecca Cheng, Victoria Rosborough, Keith Powell, Juergen Musolf, David Barton, Georgios Kyriazidis, Maximilian Shah, Xinrui Zhu, Yaowen Hu, Allen Chu, Henry Garrett, Amirhassan Shams-Ansari, Gage Hills, Leif Johansson, Klaus Boller, Marko Lončar

Proceedings Volume PC12889, PC128890U (2024) https://doi.org/10.1117/12.3023335

KEYWORDS: Semiconductor lasers, Lithium niobate, Thin films, Laser bonding, Waveguides, Wafer bonding, Tunable lasers, Laser frequency, Fiber lasers, Tunable filters

Read Abstract +

Proceedings Article | 12 March 2024 Presentation + Paper

Presentation + Paper

Advancements in high-brightness tapered diode laser amplifiers

Jenna Campbell, Michelle Labrecque, Kevin McClune, Igor Kudryashov, Chris Ebert, Sander Boelen, Elliot Burke, Thomas Liu, Henry Garrett, Matthew Larkins, Sarah Kinney, Allen Chu, Hannah Grant, Gordon Morrison, Leif Johansson, Milan Mashanovitch, Paul Leisher

Proceedings Volume 12867, 1286706 (2024) https://doi.org/10.1117/12.3003760

KEYWORDS: High power diode lasers, Semiconductor optical amplifiers, Semiconductor lasers, High power lasers, Continuous wave operation

Read Abstract +

Proceedings Article | 12 March 2024 Presentation

Presentation

Progress of high-speed photodiodes and their applications

Maddy Woodson, Steven Estrella, Estefano Fodor, Leif Johansson

Proceedings Volume PC12885, PC128850B (2024) https://doi.org/10.1117/12.3012705

KEYWORDS: Photodiodes, Optical fibers, Industrial applications, Electric fields, Design and modelling, Analog electronics

Read Abstract +

Proceedings Article | 15 June 2023 Presentation

Presentation

30 dBm single mode fiber-coupled semiconductor optical amplifier at 1550 nm

Michelle Labrecque, Jenna Campbell, Kevin McClune, Elliot Burke, Thomas Liu, Henry Garrett, Matthew Larkins, Sarah Kinney, Milan Mashanovitch, Leif Johansson, Paul Leisher

Proceedings Volume PC12515, PC1251503 (2023) https://doi.org/10.1117/12.2675439

KEYWORDS: Semiconductor optical amplifiers, Semiconductor lasers, Remote sensing, Reliability, Optical communications, Optical amplifiers, Light sources and illumination, LIDAR, Fiber amplifiers, Continuous wave operation

Read Abstract +

Proceedings Article | 17 March 2023 Presentation + Paper

Presentation + Paper

Photonic wire bonding via two-photon polymerization laser lithography for hybrid integration

Victoria Rosborough, Hannah Grant, Juergen Musolf, Henry Garrett, Jessica MacFarlane, Sabrina Wagner, Amalu Shimamura, Gordon Morrison, Leif Johansson

Proceedings Volume 12424, 124240Q (2023) https://doi.org/10.1117/12.2647641

KEYWORDS: Waveguides, Two photon polymerization, Silicon, Semiconductor lasers, Lithography, Waveguide lasers, Silicon nitride, Direct write lithography, Optoelectronics integration

Read Abstract +

Proceedings Article | 17 March 2023 Presentation

Presentation

30 dBm single mode fiber-coupled semiconductor optical amplifier at 1550 nm (Conference Presentation)

Jenna Campbell, Michelle Labrecque, Kevin McClune, Elliot Burke, Thomas Liu, Henry Garrett, Matthew Larkins, Daniel Renner, Milan Mashanovitch, Leif Johansson, Paul Leisher

Proceedings Volume 12403, 1240304 (2023) https://doi.org/10.1117/12.2650694

KEYWORDS: Semiconductor optical amplifiers, Fiber amplifiers, Optical amplifiers, Semiconductor lasers, Remote sensing, Reliability, Optical communications, LIDAR, Continuous wave operation

Read Abstract +

Proceedings Article | 30 May 2022 Presentation

Presentation

High power diffraction-limited tapered diode lasers

Michelle Labrecque, Jenna Campbell, Kevin McClune, Fedor Talantov, Elliot Burke, Daniel Renner, Milan Mashanovitch, Leif Johansson, Paul Leisher

Proceedings Volume PC12092, PC1209206 (2022) https://doi.org/10.1117/12.2622976

KEYWORDS: Semiconductor lasers, High power lasers, Fiber lasers, Laser applications, LIDAR, High power diode lasers, Broad area laser diodes

Read Abstract +

Proceedings Article | 1 April 2022 Presentation

Presentation

High power diffraction-limited tapered diode lasers at 885 nm and 980 nm

Jenna Campbell, Michelle Labrecque, Kevin McClune, Fedor Talantov, Elliot Burke, Daniel Renner, Milan Mashanovitch, Leif Johansson, Paul Leisher

Proceedings Volume PC11983, PC1198305 (2022) https://doi.org/10.1117/12.2611182

KEYWORDS: Semiconductor lasers, High power lasers, Fiber lasers, Laser applications, LIDAR, Broad area laser diodes

Read Abstract +

Proceedings Article | 5 March 2022 Presentation

Presentation

High-power, high-temperature O-band DFBs and SOAs for integrated photonic applications

Hannah Grant, Jessica MacFarlane, Amalu Shimamura, Gordon Morrison, Paul Leisher, Kristoffer Ottosson, Leif Johansson, Milan Mashanovitch

Proceedings Volume PC12004, PC120040C (2022) https://doi.org/10.1117/12.2607900

KEYWORDS: Integrated photonics, Temperature metrology, High power lasers, Continuous wave operation, System integration, Semiconductor optical amplifiers, Semiconductor lasers, RF photonics, Multiplexing, Laser optics

Read Abstract +

Proceedings Article | 4 March 2022 Presentation + Paper

Presentation + Paper

>3W diffraction-limited 1550 nm diode laser amplifiers for LIDAR

Paul Leisher, Jenna Campbell, Michelle Labrecque, Kevin McClune, Trevor Cooper, Elliot Burke, Fedor Talantov, Daniel Renner, Leif Johansson, Milan Mashanovitch

Proceedings Volume 11982, 1198206 (2022) https://doi.org/10.1117/12.2611181

KEYWORDS: Semiconductor lasers, Optical amplifiers, LIDAR, Amplifiers, Continuous wave operation, Fiber amplifiers, Semiconductor optical amplifiers, Photonics, Monochromatic aberrations, Fiber lasers

Read Abstract +

Proceedings Article | 11 March 2020 Presentation

Presentation

High performance integrated photonic components for laser systems (Conference Presentation)

Gordon Morrison, Yuvaraj Dora, Steven Estrella, Hannah Grant, Jes Sherman, Kristoffer Ottosson, Jason Seifter, Trevor Cooper, Don Kebort, Michelle Labrecque, Jenna Campbell, Kenneth Hay, Paul Leisher, Daniel Renner, Leif Johansson, Milan Mashanovitch

Proceedings Volume 11261, 1126102 (2020) https://doi.org/10.1117/12.2546904

KEYWORDS: Reliability, Photonic integrated circuits

Read Abstract +

Proceedings Article | 18 October 2019 Open Access

Open Access

Paper

High-speed RZ-DPSK photonic integrated transmitter for space optical communications (Erratum)

Joseph Fridlander, Victoria Rosborough, Fengqiao Sang, Sergio Pinna, Steven Estrella, Leif Johansson, Jonathan Klamkin

Proceedings Volume 11133, 1113316 (2019) https://doi.org/10.1117/12.2558903

KEYWORDS: High speed photonics, Transmitters, Astronomical imaging, Optical communications, Atmospheric propagation engineering, Computer engineering, Laser communications, Atmospheric optics, Optical engineering

Read Abstract +

Proceedings Article | 6 September 2019 Presentation + Paper

Presentation + Paper

High-speed RZ-DPSK photonic integrated transmitter for space optical communications

Joseph Fridlander, Victoria Rosborough, Fengqiao Sang, Sergio Pinna, Steven Estrella, Leif Johansson, Jonathan Klamkin

Proceedings Volume 11133, 1113309 (2019) https://doi.org/10.1117/12.2528213

KEYWORDS: Photonic integrated circuits, Transmitters, Optical communications, Electronics, Modulation, Eye, Modulators, High speed photonics

Read Abstract +

Proceedings Article | 20 March 2019 Paper

Paper

Photonic integrated transmitter for space optical communications

Joseph Fridlander, Victoria Rosborough, Fengqiao Sang, Sergio Pinna, Steven Estrella, Leif Johansson, Jonathan Klamkin

Proceedings Volume 10910, 1091026 (2019) https://doi.org/10.1117/12.2526684

KEYWORDS: Photonic integrated circuits, Transmitters, Modulation, Eye, Optical communications, Laser communications, Astronomical imaging, Optical amplifiers, Interferometers, Clocks

Read Abstract +

Proceedings Article | 4 March 2019 Paper

Paper

Integrated photonics for NASA applications

Michael Krainak, Mark Stephen, Elisavet Troupaki, Sarah Tedder, Baraquiel Reyna, Jonathan Klamkin, Hongwei Zhao, Bowen Song, Joseph Fridlander, Minh Tran, John Bowers, Keren Bergman, Michal Lipson, Anthony Rizzo, Ipshita Datta, Nathan Abrams, Shayan Mookherjea, Seng-Tiong Ho, Qiang Bei, Yingyan Huang, Yongming Tu, Behzad Moslehi, James Harris, Andrey Matsko, Anatoliy Savchenkov, Guangyao Liu, Roberto Proietti, S. J. Yoo, Leif Johansson, Christophe Dorrer, Francisco Arteaga-Sierra, Jie Qiao, Songbin Gong, Tingyi Gu, Osgar John Ohanian, Xingjie Ni, Yimin Ding, Yao Duan, Hamed Dalir, Ray Chen, Volker Sorger, Tin Komljenovic

Proceedings Volume 10899, 108990F (2019) https://doi.org/10.1117/12.2509808

KEYWORDS: Waveguides, Modulation, Silicon, Modulators, Photonic integrated circuits, Graphene, Oscillators, Integrated photonics, Integrated optics, Silicon photonics

Read Abstract +

NASA is working with US industry and academia to develop Photonic Integrated Circuits (PICs) for: (1) Sensors (2) Analog RF applications (3) Computing and free space communications. The PICs provide reduced size, weight, and power that is critical for space-based systems. We describe recent breakthrough 3D monolithic integration of photonic structures, particularly high-speed graphene-silicon devices on CMOS electronics to create CMOS-compatible highbandwidth transceivers for ultra-low power Terabit-scale optical communications. An integrated graphene electro-optic modulator has been demonstrated with a bandwidth of 30 GHz. Graphene microring modulators are especially attractive for dense wavelength division multiplexed (DWDM) systems. For space-based optical communication and ranging we have demonstrated generating a variable number of channels from a single laser using breadboard components, using a single-sideband carrier-suppressed (SSBCS) modulator driven by an externally-supplied RF tone (arbitrary RF frequency), a tunable optical bandpass filter, and an optical amplifier which are placed in a loop. We developed a Return--to-Zero (RZ) Differential Phase Shift Keying (DPSK) laser transmitter PIC using an InP technology platform that includes a tunable laser, a Semiconductor Optical Amplifier (SOA), high-speed Mach-Zehnder Modulator (MZM), and an electroabsorption (EAM) modulator. A Silicon Nitride (SiN) platform integrated photonic circuit suitable for a spectrally pure chip-scale tunable opto-electronic RF oscillator (OEO) that can operate as a flywheel in high precision optical clock modules, as well as radio astronomy, spectroscopy, and local oscillator in radar and communications systems is needed. We have demonstrated a low noise optical frequency combs generation from a small OEO prototypes containing very low loss (~1 dB) waveguide couplers of various shapes and sizes integrated with an ultrahigh-Q MgF2 resonators. An innovative miniaturized lab-on-a-chip device is being developed to directly monitor astronaut health during missions using ~3 drops of body fluid sample like blood, urine, and potentially other body fluids like saliva, sweat or tears. The first-generation system comprises a miniaturized biosensor based on PICs (including Vertical Cavity Surface Emitting Laser – VCSEL, photodetector and optical filters and biochemical assay that generates a fluorescent optical signal change in response to the target analyte.

Proceedings Article | 15 February 2018 Presentation + Paper

Presentation + Paper

RZ-DPSK photonic integrated transmitter for space optical communications

Joseph Fridlander, Sergio Pinna, Victoria Rosborough, Steven Estrella, Leif Johansson, Jonathan Klamkin

Proceedings Volume 10524, 105240Y (2018) https://doi.org/10.1117/12.2287557

KEYWORDS: Modulation, Transmitters, Optical communications, Photonic integrated circuits, Modulators, Tunable lasers, Optical amplifiers, Phase shift keying, Eye

Read Abstract +

Proceedings Article | 14 February 2018 Paper

Paper

Application of laser speckle to randomized numerical linear algebra

George Valley, Thomas Shaw, Andrew Stapleton, Adam Scofield, George Sefler, Leif Johannson

Proceedings Volume 10551, 105510M (2018) https://doi.org/10.1117/12.2294574

KEYWORDS: Speckle, Waveguides, Antimony, Linear algebra, Photodiodes, Speckle pattern, Planar waveguides, Modulators, Photonics, Computer simulations

Read Abstract +

Proceedings Article | 28 January 2017 Paper

Paper

High-power InGaAs/InP MUTC photodetector modules for RF photonics links and ROF

Steven Estrella, Kenneth Hay, Jenna Campbell, Brian Maertz, Quinglong Li, Keye Sun, Andreas Beling, Leif Johansson, Daniel Renner, Milan Mashanovitch

Proceedings Volume 10128, 101280M (2017) https://doi.org/10.1117/12.2253346

KEYWORDS: Photodetectors, Photodiodes, Radio over Fiber, Photonics, Sensors, RF photonics, Antennas, Ceramics, Modulation, Resistors

Read Abstract +

Proceedings Article | 17 May 2016 Paper

Paper

Optical components and integrated circuits for RF photonics

Leif Johansson, Steven Estrella, Jeremy Thomas, Jenna Campbell, Daniel Renner, Milan Masanovic

Proceedings Volume 9836, 98360D (2016) https://doi.org/10.1117/12.2224535

KEYWORDS: Optical components, RF photonics, Integrated optics, Photodetectors, Modulators, Photonic integrated circuits, Optical modulators, Photonics, Waveguides, Silicon

Read Abstract +

Proceedings Article | 25 February 2016 Paper

Paper

High-power MUTC photodetectors for RF photonic links

Steven Estrella, Leif Johansson, Milan Mashanovitch, Andreas Beling

Proceedings Volume 9747, 97471X (2016) https://doi.org/10.1117/12.2214424

KEYWORDS: Photodetectors, RF photonics, Sensors, Photonic integrated circuits, Photodiodes, Microwave photonics, Ceramics, Integrated optics

Read Abstract +

Proceedings Article | 28 February 2008 Paper

Paper

SGDBR single-chip wavelength tunable lasers for swept source OCT

Dennis Derickson, Michael Bernacil, Andrew DeKelaita, Ben Maher, Shane O'Connor, Matthew Sysak, Leif Johanssen

Proceedings Volume 6847, 68472P (2008) https://doi.org/10.1117/12.761039

KEYWORDS: Mirrors, Reflectivity, Optical coherence tomography, Tunable lasers, Wavelength tuning, Modulation, Switching, Frequency modulation, Phase shift keying, Laser applications

Read Abstract +

Proceedings Article | 3 March 2006 Paper

Paper

Field modulated wavelength converters

Jonathon Barton, Matthew Sysak, Anna Tauke-Pedretti, Matthew Dummer, James Raring, Leif Johansson, Milan Mašanović, Daniel Blumenthal, Larry Coldren

Proceedings Volume 6124, 612417 (2006) https://doi.org/10.1117/12.656011

KEYWORDS: Quantum wells, Modulators, Modulation, Electrodes, Waveguides, Sensors, Receivers, Transmitters, Tunable lasers, Integrated optics

Read Abstract +

Proceedings Article | 25 March 2005 Paper

Paper

Widely tunable photocurrent-driven wavelength converters

Jonathon Barton, Matthew Sysak, Anna Tauke-Pedretti, Matthew Dummer, Jonathan Klamkin, Jonathan Getty, Erik Skogen, James Raring, Leif Johansson, Milan Masanovic, Larry Coldren

Proceedings Volume 5729, (2005) https://doi.org/10.1117/12.593638

KEYWORDS: Quantum wells, Modulators, Receivers, Modulation, Waveguides, Sensors, Transmitters, Optical filters, Zinc, Tunable lasers

Read Abstract +

Proceedings Article | 18 June 2004 Paper

Paper

Monolithically integrated InP-based tunable wavelength conversion

John Hutchinson, Jonathon Barton, Milan Masanovic, Matthew Sysak, Jeffrey Henness, Leif Johansson, Daniel Blumenthal, Larry Coldren

Proceedings Volume 5349, (2004) https://doi.org/10.1117/12.537774

KEYWORDS: Modulation, Tunable lasers, Photodiodes, Receivers, Waveguides, Modulators, Transmitters, Mirrors, Quantum wells, Analog electronics

Read Abstract +

Proceedings Article | 8 December 2003 Paper

Paper

Wavelength-agile integrated optical transmitters for analog applications

Leif Johansson, Chin-Hui Chen, Yuliya Akulova, Gregory Fish, Larry Coldren

Proceedings Volume 5248, (2003) https://doi.org/10.1117/12.511378

KEYWORDS: Modulators, Modulation, Intermodulation, Distortion, Transmitters, Analog electronics, Waveguides, Integrated optics, Electrodes, Optical amplifiers

Read Abstract +

Proceedings Article | 9 July 2003 Paper

Paper

Photonic integrated circuits based on sampled-grating distributed-Bragg-reflector lasers

Jonathon Barton, Erik Skogen, Milan Masanovic, James Raring, Matt Sysak, Leif Johansson, Steven DenBaars, Larry Coldren

Proceedings Volume 4998, (2003) https://doi.org/10.1117/12.476542

KEYWORDS: Quantum wells, Mirrors, Modulators, Waveguides, Etching, Photonic integrated circuits, Brain-machine interfaces, Optoelectronics, Reflection, Sensors

Read Abstract +

Showing 5 of 28 publications

SIGN IN TO:

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Advertisement

Advertisement