TOPTICA Photonics AG | Date: 2016-08-15
The invention relates to an apparatus for generating temporally spaced apart light pulses, comprising
TOPTICA Photonics AG | Date: 2016-10-17
The invention relates to a laser apparatus comprising a laser radiation source which generates pulsed laser radiation, wherein the laser radiation has spectral components in at least two wavelength ranges that differ from one anothera first wavelength range (W1) and a second wavelength range (W2), and comprising a dispersion control element comprising at least one dielectric multilayer mirror (MCM), wherein the laser radiation is reflected one or more times at the multilayer mirror (MCM). It is an object of the invention to provide a laser apparatus which is improved over the prior art. In particular, the setup thereof should be less complex, require less adjustment outlay andin particularbe less sensitive to external influences. The invention achieves this object in that the multilayer mirror (MCM) is reflective in the two wavelength ranges (W1, W2), the reflection of the spectral component in the second wavelength range (W2) having a time delay in relation to the reflection of the spectral component in the first wavelength range (W1) such that the spectral components of the laser radiation reflected at the multilayer mirror (MCM) in the two wavelength ranges (W1, W2) coincide in time in an interaction centre of the laser apparatus. Moreover, the invention relates to a dielectric multilayer mirror and a method for generating laser radiation.
Agency: European Commission | Branch: H2020 | Program: IA | Phase: ICT-28-2015 | Award Amount: 10.29M | Year: 2016
Photonics is essential in todays life science technology. PIX4life will mature a state of the art silicon nitride (SiN) photonics pilot line for life science applications in the visible range and pave the way to make it accessible as an enabler for product development by a broad range of industrial customers. We aim at 1) establishing a validated CMOS compatible SiN technology platform in the visible range for complex densely integrated photonics integrated circuits (PICs), 2) developing a supply chain to integrate mature semiconductor laser sources and CMOS detector arrays with the SiN PICs on the basis of technologies that are scalable to high volume, 3) establishing appropriate design kits and tools, 4) demonstrating the performance of the pilot line for well-chosen life science applications in the domain of vital sensing, multispectral sources for super-resolution microscopy, cytometry and 3D tissue imaging, 5) setting up the logistics for multi-project-wafer (MPW) access to the pilot line. Integrated photonics has demonstrated that optical functions can be realized in a more compact, robust and cost-effective way by integrating functionalities on a single chip. At present industrialization is limited to telecom applications at infrared wavelengths. The field of life sciences is heavily dependent on bulky and expensive optical systems and would benefit enormously from low cost photonic implementations. However this field requires a visible light PIC-technology. Proof of concept demonstrations are abundant, but pilot line and manufacturing capacity is limited, inhibiting industrial take up. PIX4life will drive the future European RTD in visible photonic applications for life sciences by bridging technological research (via participation of 2 academic and 2 research institutes) towards industrial development (via participation of a foundry, two large companies and 9 fabless SMEs, either technology suppliers or life science end users).
Agency: European Commission | Branch: H2020 | Program: MSCA-ITN-ETN | Phase: MSCA-ITN-2016 | Award Amount: 3.89M | Year: 2017
The network Collective effects and optomechanics in ultra-cold matter (ColOpt) will train early-stage researchers (ESR) in fundamental science and applications in the areas of cold atom and quantum physics, optical technologies and complexity science to promote European competiveness in emergent quantum technologies. It consists of nine academic nodes and three companies from six European countries, supported by two partners in Brazil and the USA, five further non-academic partners and one public-private partnership. Collective, nonlinear dynamics and spontaneous self-organization are abundant in nature, sciences and technology and of central importance. Building on this interdisciplinary relevance, a particular novelty of ColOpt is the integration of classical and quantum self-organization. The research program focuses on collective interactions of light with laser-cooled cold and quantum-degenerate matter. We will explore innovative control of matter through optomechanical effects, identify novel quantum phases, enhance knowledge of long-range coupled systems and advance the associated trapping, laser and optical technologies, establishing new concepts in quantum information and simulation. ColOpt combines cutting-edge science with training in complex instrumentation and methods to the highest level of technical expertise, both experimentally and theoretically, and fosters the development of transferable skills and critical judgement. Each ESR will be exposed to a broad spectrum of experimental, theoretical and industrial environments, to obtain core competence in one of them and the collaborative experience and skills to thrive in a truly international and intersectorial framework. ESRs will develop the capabilities to analyse and understand complex interactions, and will gain awareness of societal and entrepreneurial needs and opportunities. Taken together, this will enable them to excel in a variety of sectors of our diverse and rapidly changing society.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: FETOPEN-1-2014 | Award Amount: 3.97M | Year: 2015
Atomic clocks are the backbone of our modern communication and navigation technology, e.g. through the global positioning system (GPS). Improving these clocks will open up exciting new applications in geodesy, fleet tracking, autonomous vehicles, augmented reality and shed light on some of the most fundamental questions in research. Todays best atomic clocks lose only 1 second in 30 billion years, making them the most precise measurement devices ever built. However, such clocks are extremely delicate and susceptible to external perturbations; they can only be operated in specialized laboratories. We propose to develop a novel type of clock, based on a unique nuclear transition in Thorium-229. This nuclear clock will be fundamentally different from existing atomic clocks, which are based on transitions in the electron shell. It will be largely inert to perturbations, simpler by design, and holds the potential to outperform existing atomic clocks in terms of precision. So far, progress towards an application of the Thorium nuclear transition has been hampered by the extreme technological challenges related to the scarcity of 229Th, insufficient detector resolution, and exotic lasers frequencies. Suitable technology is only becoming available just now. Furthermore, this research demands supreme expertise in a variety of fields, encompassing nuclear and atomic physics, quantum optics, metrology, as well as detector- and laser technology. Our interdisciplinary consortium is assembled to precisely match these requirements, joining for the first time Europes leading research groups in the respective fields. The work will focus on two objectives; (i) finding clear evidence of the transition and measuring its frequency, and (ii) developing all key components required for operation of a nuclear clock. We are certain that next-generation satellite-based navigation technology and other precision timing applications will greatly benefit from more precise and robust clocks.
TOPTICA Photonics AG | Date: 2015-03-17
The invention relates to a method for stabilizing a diode laser with a semiconductor laser diode and an external resonator (ECDL), wherein the external resonator is comprised of at least one angle-dispersive, frequency-selective element and wherein the frequency of the diode laser is essentially determined by the length of the external resonator and by the position of the angle-dispersive, frequency-selective element, and wherein these two frequency-selective elements or one element thereof can be detuned by way of a correction means (10) for harmonization to each other, which is characterized in that the portion of the light reflected from the external resonator with the angle-dispersive, frequency-selective element back to the semiconductor laser diode and not optically coupled into the semiconductor laser diode (designated as non-optically coupled light) or part thereof, is measured and that from the relevant measuring values, after comparison with a reference value, a fault signal is generated which as control variable activates the correction means for synchronization of the frequency-selective elements. Furthermore, the invention relates to device for implementing the method.
TOPTICA Photonics AG | Date: 2015-07-23
An optical resonator is provided made of low-outgassing materials, including at least one chamber, a non-linear crystal arranged in the chamber, and an array of mirrors arranged in the chamber and including a plurality of mirrors for deflecting a light beam. To specify such a resonator which is low-outgassing and which ensures fine adjustment of the optical elements at the same time, the present invention proposes that the non-linear crystal and at least one mirror of the array of mirrors is arranged on one movable carrier each, wherein the said carrier is fabricated from a low-outgassing material and seals the chamber. Furthermore, a sealing system is provided including a housing, an optical element and a sealing element of indium or indium alloy, which is arranged between the housing and the optical element, wherein the optical element has a lateral surface and the sealing element is arranged on the lateral surface.
TOPTICA Photonics AG | Date: 2015-02-18
A method and system generates two synchronized trains of laser pulses at different wavelengths, wherein the two pulse trains are temporally synchronized and have a stable phase relation, and wherein the wavelength of one of the pulse trains is de-tunable. The method includes the steps of: generating a train of ultra-short seed laser pulses; splitting the train of seed laser pulses into a first pulse train and a second pulse train; and frequency-shifting the first pulse train by soliton self-frequency shift in an optically pumped waveguide having anomalous dispersion, wherein the spectrum of the frequency-shifted first pulse train is de-tunable by varying the pump power.
TOPTICA Photonics AG | Date: 2016-04-08
A method and system for delivering laser pulses achieves the delivery of high quality laser pulses at the location of an application. The method includes the steps of: generating laser pulses, amplifying the laser pulses, temporally stretching the amplified laser pulses, and propagating the amplified laser pulses through an optical delivery fiber of desired length, wherein the laser pulses are temporally compressed in the optical delivery fiber and wherein the laser pulses undergo nonlinear spectral broadening in the optical delivery fiber.
TOPTICA Photonics AG | Date: 2015-06-23
The present invention relates to a terahertz system for generating and time-resolved incoherent detecting of THz radiation, said system comprising a pulse laser light source (1) emitting laser pulses with a pulse duration of up to 1 ps at a repetition frequency of at least 1 MHz, a first THz antenna serving as sender (3) which is optically coupled to the laser light source (1) and converts the laser pulses into THz pulses with a pulse duration of up to 10 ps, and a second THz antenna serving as receiver (5). It is the object of the present invention to provide an improved terahertz system. As compared with the state of the art, it is above all intended to allow for a faster incoherent measurement of THz radiation. To this end, the present invention proposes to couple the second THz antenna to a detector circuitry whose bandwidth is at least equivalent to the repetition frequency of the laser light source. Furthermore, the present invention relates to applications of the terahertz system as well to a method for generating and time-resolved incoherent detecting of THz radiation.