A5035982236- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Semiconductor Lasers and Optical Devices
- Solid State Laser Technologies
- Laser Design and Applications
- Spectroscopy and Laser Applications
- Advanced Fiber Optic Sensors
- Advanced Measurement and Metrology Techniques
- Radio Astronomy Observations and Technology
- Optical Network Technologies
- Advanced Frequency and Time Standards
- Analytical Chemistry and Sensors
- Advanced Research in Science and Engineering
- Inertial Sensor and Navigation
Toptica Photonics (Germany)
2020-2024
University of Twente
2021-2024
Chan Heart Rhythm Institute
2021
Generating visible light with wide tunability and high coherence based on photonic integrated circuits is of interest for applications in biophotonics, precision metrology, quantum technology. Here we present, to our knowledge, the first demonstration a hybrid-integrated diode laser spectral range. Using an AlGaInP optical amplifier coupled low-loss <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi...
We present hybrid-integrated extended cavity diode lasers tunable around 637 nm, with a gain-wide spectral coverage of 8 nm. This tuning range addresses the zero-phonon line nitrogen-vacancy centers and includes wavelength HeNe (633 nm). Best performance shows wide mode-hop free up to 97 GHz narrow intrinsic linewidth down 10 kHz. Also, maximum output power is 2.5 mW in single-mode fiber, corresponding an on-chip 4.0 mW. Full integration packaging standard housing fiber pigtails provide high...
Hybrid integrated diode lasers based on combining semiconductor optical amplifiers with low-loss Si <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> N xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> -based feedback circuits enable great laser performance for advanced photonic circuits. In particular, using high-Q ring resonators frequency-selective provides wide spectral coverage, mode-hop free tuning, and high frequency stability...
We present a hybrid-integrated extended cavity diode laser tunable around 637 mn, with total tuning range of 8 nm, allowing to address the zero-phonon line nitrogen vacancy centers. The provides wide mode-hop free over 43.6 GHz and narrow intrinsic linewidth below 10 kHz. maximum output power is 2.5 mW in single-mode fiber, corresponding an on-chip 4.0 mW. assembled standard housing fiber-pigtailed.
Hybrid integrated diode lasers based on combining semiconductor optical amplifiers with low-loss Si3N4-based feedback circuits enable great laser performance for advanced photonic circuits. In particular, using high-Q Si3N4 ring resonators frequency-selective provides wide spectral coverage, mode-hop free tuning, and high frequency stability short timescales, showing as ultra-narrow intrinsic linewidths. However, many applications also require long-term stability, which can be provided by...
We present a novel hybrid 800 nm laser with wide tuning range, high optical power and ultra-narrow linewidth ⪆kHz speeds small footprint. Tunable, narrow lasers around 800nm serve as an attractive choice for e.g. OCT, LIDAR atomic transition locking in clocks. The has microring resonator based cavity. range of 45 maximum output 5 dBm. intrinsic the is measured at 22 kHz.
We present hybrid-integrated extended cavity diode lasers tunable around 637 nm, with a gain-wide spectral coverage of 8 nm. This tuning range allows addressing the zero-phonon line nitrogen vacancy centers and includes wavelength HeNe (633 nm). The provide wide mode-hop free up to 97 GHz narrow intrinsic linewidth down 10 kHz. maximum output power is 2.5 mW in single-mode fiber, corresponding an on-chip 4.0 mW. Full integration packaging standard housing fiber pigtails high stability will...
We present the first hybrid integrated, extended cavity diode laser (ECDL) in blue wavelength range. Integrating a CMOS-compatible silicon nitride (Si 3 N 4 ) feedback circuit with gallium amplifier, we obtain 8.5 nm wide tuning around 454 nm.
We present a machine learning approach to automatic frequency locking of lasers based on artificial neural networks. show that this method reliably identifies the target line under wide range operating conditions.
We present a novel approach to Bragg-fiber extended diode lasers by using an integrated waveguide circuit as interposer. The interposer suppresses undesired ASE more than 20 dB compared previous designs.
Mode-locked lasers are of interest for applications such as biological imaging, non-linear frequency conversion, and single-photon generation. In the infrared, chip-integrated mode-locked have been demonstrated through integration laser diodes with low-loss photonic circuits. However additional challenges, a higher propagation loss smaller alignment tolerances prevented realization in visible range. Here, we demonstrate first diode using an integrated circuit cavity extension. Based on...
Mode-locked lasers are of interest for applications such as biological imaging, nonlinear frequency conversion, and single-photon generation. In the infrared, chip-integrated mode-locked have been demonstrated through integration laser diodes with low-loss photonic circuits. However, additional challenges, a higher propagation loss smaller alignment tolerances, prevented realization in visible range. Here, we demonstrate first, to best our knowledge, diode using an integrated circuit cavity...
Hybrid integrated diode lasers offer a robust and small-sized solution for applications in telecommunications, quantum optics metrology due to their wide tunability ultra-narrow linewidth. Here, we present the fabrication, packaging successful operation of first fully integrated, aluminum oxide (Al2O3) based, hybrid laser operating at 405 nm. Low-loss, high-confinement waveguides are fabricated with measured propagation loss only 2.8 ± 0.3 dB/cm. The consists GaN SLED butt-coupled an Al2O3...
This work reports on a compact and robust single-frequency laser emitting at 633 nm, for industrial metrology applications. The system integrates miniaturized optical isolator, single-mode fiber coupling vapor cell as frequency reference. achieved absolute stability is 10<sup>-8</sup>, while the output power from >1 mW. shows stable operation over an ambient temperature range between 0 70°C, with electrical consumption of <3 W. can replace gas lasers in applications, serve key...
In order to stabilize a laser's emission frequency, absolute references such as molecular absorption lines are widely used. To automate the stabilization process, desired line needs be identified reliably from spectrum by computer. We present an artificial neural network solving this task using iodine example. The is trained only simulated data and subsequently tested measured data. show that approach robust against large variations of operating environmental conditions.
Photonic quantum technologies, such as quantum-key distribution and photonic processing, are currently undergoing a transition from research labs to industrial applications [1]. Upscaling of systems calls for on-chip laser sources. In particular, many require lasers in the visible range, e.g., addressing particular atomic ionic transitions, dots or nitrogen vacancy (NV) centers. Specifically, narrow linewidths wide tunabilty required emitters. Scaling also demand mode stability robustness,...
Hybrid integration of diode amplifiers with Si 3 N 4 feedback circuits offers wide tuning and high frequency stability on short timescales. We improve long-term stability, for the first time, by locking laser to an acetylene absorption line.