Kartner optics and quantum electronics group, research laboratory of electronics. Lumibird uses its knowledge and highquality manufacturing process to produce a stable and reliable narrow linewidth fiber laser. The laser power and linewidth are comparable to previous systems based. Towards a laser system for narrow line cooling of ytterbium atoms jana kalista smith. Ytterbium doped allfiber integrated high power laser systems and their applications saniye sinem yilmaz m. Ytterbium lasers are highly efficient, have long lifetimes and can generate short pulses.
The ground energy state 2 f 72 has the form of a quartet of twicedegenerated states, the socalled kramers doublets, and the excited state 2 f 52. Lasercooled trapped ions are the basis for many emerging technologies in atomic physics, especially largescale iontrap quantum computing 1, 2 and optical. As heat is generated by the thin disk laser assembly the heat is removed by when the liquid droplets impinging the inner surface of the interface cap vaporize and effectively cool the laser crystal through a twophase heat transfer process. Ytterbium fiber lasers are based on an mofpa design. The ytterbium fiber laser can be randomly or linearly polarized. Laser cooling and optical trapping of ytterbium durham etheses. Investigation of subdoppler cooling in an ytterbium magnetooptical. Laser cooling and trapping download ebook pdf, epub. A highpower 556nm source for laser cooling of ytterbium atoms jiawen pi, vladyslav ivanov, subhadeep gupta department of physics, university of washington background objectives design and build a bowtie cavity design and build a crystal heating system test a single beam path to test the performance of the crystal with the heating system. Laser cooling of trapped ytterbium ions with an ultraviolet diode laser d. Ylrlp is a series of diode pumped singlemode, linearly polarized cw ytterbium fiber lasers with a unique combination of high power, ideal beam quality, fiber delivery and high wallplug efficiency. Lasers for hyperfine state detection and cooling of.
Solidstate laser cooling of ytterbiumdoped tungstate. Lasers for hyper ne state detection and cooling of ytterbium ions sarah innesgold, university of washington reu 29 august 2014 abstract the purpose of this reu project was to implement a system of lasers making it possible to cool. Thermal management of ytterbiumdoped highpower fiber lasers. We report on the development of a trappedion, microwave frequency standard based on the 12. In particular, a successful application of a qgm technique to twoelectron atoms such as alkalineearth metal and ytterbium yb atoms is remarkable because it offers many unique possibilities for quantum simulation and quantum.
Photoluminescence pl spectra is evidence that the phononassisted. Ytterbium linearly polarized lasers, ylrlp ipg photonics. Our present work on ytterbium yb, z 70 is an experi mental study of sub doppler cooling in atoms with no elec tron angular momentum in the. Pdf we demonstrate an ultraviolet diode laser system for cooling of trapped ytterbium ions. Lasers for hyperfine state detection and cooling of ytterbium ions sarah innesgold university of washington int reu 2014images of trapped ytterbium ions from. We developed a highpower laser system at a wavelength of 399 nm for laser cooling of ytterbium atoms with ultraviolet laser diodes. The diagram of the energy levels of this ion in zblanp glass is shown in fig. In particular, the careful tuning of the relative angle between an applied magnetic field and a polarization of lattice laser beams realizes the cancellation of the inhomogeneity of the lightshifts, which enhances a cooling efficiency of narrowline laser cooling, both for sideband cooling along the horizontal direction and doppler cooling. Laser cooling and optical trapping of ytterbium accepted version 28mb. Transportable source of lasercooled ultracold ytterbium. Broadband laser cooling of trapped atoms with ultrafast pulses. Lasercooled ytterbium ion microwave frequency standard. Ultralowthreshold ytterbium doped glass laser fabricated by the solgel process 3. Lasers for hyper ne state detection and cooling of ytterbium ions.
The laser power and linewidth are comparable to those of previous systems based on resonant frequency doubling, but the system is simpler, more robust, and less expensive. Our present work on ytterbium yb, z 70 is an experi mental study of subdoppler cooling in atoms with no elec tron angular momentum in the. This thesis presents the development of an experimental apparatus designed to. Heat transfer in the medium is with three processes. The system achieved laser cooling of ytterbium ions in a linear paul trap to less than 270 mk. Ytterbium doped laser crystals and glasses have a number of interesting properties, which differ from those of, e. We have loaded all seven stable isotopes of yb into the trap. Features ipgs new ylsu series is developed specifically for applications where laser system size is critical. A photograph of the lasers mounted within their 6u height subrack 260 194 335 mm is shown in figure 2. Lasers for hyper ne state detection and cooling of. It probably wouldnt be worth the bother if not for the fact that it has a pair of states that can serve. An ultraviolet diode laser system for laser cooling trapped. Lasercooled ytterbium ion microwave frequency standard arxiv.
Development of ytterbiumdoped oxyfluoride glasses for laser. Ytterbium is a chemical element with the symbol yb and atomic number 70. Development of ytterbiumdoped oxyfluoride glasses for. The scienti c interest in ber lasers stems from the rich nonlinear. Trivalent ytterbium ions doped into a heavymetal fluoride.
Laser cooling and optical trapping of ytterbium durham e. Laser cooled ytterbium ion microwave frequency standard s. Click download or read online button to get laser cooling and trapping book now. Optical refrigeration also called laser refrigeration or antistokes fluorescent cooling is a technique for cooling a macroscopic crystal or a piece of glass with a laser beam. Laser cooling and optical trapping of ytterbium kemp, stefan,liam 2017 laser cooling and optical trapping of ytterbium.
Highenergy ultrafast ytterbium amplifier monaco he highenergy, versatile ultrafast ytterbium amplifier powerful and versatile, ideal for both timeresolved spectroscopy or material processing monacohe is the newest member of the monaco laser family. The experiments on the laser cooling and trapping of ytterbium atoms are reported, including the twodimensional transversal cooling, longitudinal velocity zeeman deceleration, and a magneto. Mar 19, 2019 in this paper, we describe the development of a suitable compact laser system based on a 6u height rackmounted arrangement with overall dimensions 260. Compact laser system for a lasercooled ytterbium ion. Ultralowthreshold ytterbiumdoped glass laser fabricated by. Techniques in laser cooling and trapping of atomic ytterbium. Violet laser diodes for laser cooling and trapping of. Laser cooling is an important emerging technology in such areas as the cooling of semiconductors. Final report of the first phase of the space optical clocks project.
An ytterbium quantum gas microscope with narrowline laser. For both paul and penning traps, the sideband cooling limit for a single ion is. Different central wavelengths are available in standard, 1030nm, 1064nm, 1083nm, and others on request. Violet laser diodes for laser cooling and trapping of ytterbium atoms. This thesis presents the development of an experimental apparatus designed to investigate the ultracold collisional properties for mixtures of cs and yb, with a longterm view to the creation of ultracold csyb molecules via indirect cooling methods. We demonstrate broadband laser cooling of atomic ions in an rf trap using ultrafast pulses from a. The experiments on the laser cooling and trapping of ytterbium atoms are reported, including the twodimensional transversal cooling, longitudinal velocity zeeman deceleration, and a magnetooptical trap with a broadband transition at a wavelength of 399 nm. Laser cooling and trapping download ebook pdf, epub, tuebl. The laser power and linewidth are comparable to those of. Pdf high power ytterbiumdoped fiber lasers fundamentals. Laser cooling of iondoped solids and semiconductors is based on the antistokes fluorescence, where the emitted photons have.
Rp photonics encyclopedia optical refrigeration, laser. Optical atomic clocks use optical transitions in laser cooled neutral atoms or ions as quantum. Cryogenic solidstate laser materials offer many improvements in thermooptical, structural, and lasing properties. Lasercooled ytterbium ion microwave frequency standard s. Investigation of subdoppler cooling in an ytterbium. The book examines and suggests solutions for a range of problems in the development of miniature solidstate laser refrigerators, self cooling solidstate lasers and optical echoprocessors.
Equally important, ytterbium can be incorporated in glass fibers. We report the construction of frequencystabilized highpower violet laser diodes for laser cooling and trapping experiment of ytterbium atoms. Mafi, investigation of solid state laser cooling in ytterbium doped silica fibers, in conference on lasers and electrooptics, osa terchnical digest online optical society of america, 2018, paper ff3e. This site is like a library, use search box in the widget to get ebook that you want. In addition, successful cooling of a similar material, namely ytterbium doped potassium yttrium tungstate kyw, is found whose figuresofmerit for radiationbalanced lasing. Antistokes fluorescence can be used to cool a material if its radiative quantum efficiency is nearly unity. Laser cooling and trapping of yb from a thermal source. In particular, doppler cooling and subdoppler cooling have been investigated and compared in the same atom, and subdoppler cooling has been studied in two isotopes of ytterbium possessing different nuclear.
The magnetic field distributions along the axis of a zeeman slower were measured and in a good agreement with the. Delivering high pulse energy or high average power at 10 ps and usercontrolled. Studies focus on the radiative transfer of momentum from yb atoms to the surrounding light field using the strong 6s21s06s6p 1p1 transition at 398. Abstract the experiments on the laser cooling and trapping of ytterbium atoms are reported, including the twodimensional transversal cooling, longitudinal velocity zeeman deceleration, and a magnetooptical trap with a broadband transition at a wavelength of 399 nm. In addition, successful cooling of a similar material, namely ytterbiumdoped potassium yttrium tungstate kyw, is found whose figuresofmerit for radiationbalanced lasing. An ytterbium quantum gas microscope with narrowline laser cooling. Leanhardt1,2 1applied physics program, university of michigan, ann arbor, mi 48109, usa 2department of physics, university of michigan, ann arbor, mi 48109, usa yb ytterbium 173. The system is composed of an external cavity laser diode providing frequency stabilized output at a power of 40 mw and another laser diode for amplifying the laser power up to 220 mw by injection locking. Creation of ultra cold rubidium atoms for sympathetic cooling of. Investigation of subdoppler cooling in an ytterbium magneto. Laser cooling of organicinorganic lead halide perovskites. Osa improving laser cooling efficiencies of ybdoped. Investigation of solid state laser cooling in ytterbium.
We demonstrate an ultraviolet diode laser system for cooling of trapped ytterbium ions. Until recently, the only solid which had shown net cooling was an ytterbium doped heavy metal fluoride glass. An ultraviolet diode laser system for laser cooling. An externalcavity master laser of which frequency was stabilized to the ytterbium cooling transition at 398. Laser cooling in solids has been demonstrated, and cooling from room temperature to cryogenic temperatures has so far been the main focus of research. Related content highresolution laser spectroscopy of a bose einstein condensate using the ultranarrow magnetic quadrupole transition. A highpower 556nm source for laser cooling of ytterbium. Cryogenically cooled ytterbium pump lasers the further development of attoscience and strongfield physics critically depends on the development of highenergy highrepetitionrate fewcycle opcpa systems, that in turn require robust highenergy highaveragepower pump lasers. Abstract this dissertation reports an experimental and theoretical study of laser cooling and trapping of atomic ytterbium yb. Having full featured interfaces and safety electronics of the new generation ipg fiber lasers, ylsu design is costperformance.
Laser cooling of organicinorganic lead halide perovskites sontung ha1,chaoshen1, jun zhang1 and qihua xiong1,2 optical irradiation with suitable energy can cool solids, a phenomenon known as optical refrigeration. Department of physics, indian institute of science. Rp photonics encyclopedia ytterbiumdoped gain media, laser. Osa laser cooling of trapped ytterbium ions with an. Yag lasers have been investigated for cryogenic operation 111. Construction of an ytterbium laser cooling and trapping. Basic requirements for laser cooling applications include materials of low phonon energy, low background absorption, high purity and photoluminescence. From the pro le of the transition, the rms velocity after the clock pulse is calculated to be 55 10ms. Theoretical and experimental investigation of two proposed thermal management approaches for highpower fiber lasers is presented.
An ytterbium quantum gas microscope with narrowline laser cooling to cite this article. Abstract this dissertation reports an experimental study of laser cooled and magnetooptically trapped atomic ytterbium yb. Towards a laser system for narrow line cooling of ytterbium atoms. They are related to doped fiber amplifiers, which provide light amplification without lasing. Studies focus on cooling yb by driving the strong 398. The entire system fits into a 6u 19inch rack unit 51. Laser cooling of trapped ytterbium ions with an ultraviolet.
Injection locking of a high power ultraviolet laser diode. The laser system to decelerate and trap the rubidium atoms consists of four diode lasers while the laser system for ytterbium consists of a verdipumped, frequencydoubled titaniumsapphire laser. Pdf laser cooling of trapped ytterbium ions with an ultraviolet. Creation of ultra cold rubidium atoms for sympathetic. Towards a laser system for narrow line cooling of ytterbium atoms jana kalista smith a thesis submitted in partial ful. However, operation at high temperatures can be advantageous. Solidstate laser cooling of ytterbium doped tungstate crystals. The magnetic field distributions along the axis of a zeeman slower were measured and in a good agreement with the calculated results. Theoretical study of the thermal distribution in ybdoped.
Ytterbium is a relative latecomer to the laser cooling world, probably because of the slightly annoying uv lasercooling line you need to use a collection of expensive lasers to make it work, so it wasnt trapped until 1999. Although some of the work was conducted with anls 6kw carbon dioxide laser, most was performed with the 1. The first is an approach to reduce the amount of generated thermal energy by reducing the quantum defect qd in the system, which is the dominating process in an optimized fiber laser system. The laser can be monitored by pump diode current or with the output power value apc option thanks to an embedded large dynamic photodiode. Ytterbium is a relative latecomer to the laser cooling world, probably because of the slightly annoying uv laser cooling line you need to use a collection of expensive lasers to make it work, so it wasnt trapped until 1999. Cetina center for ultracold atoms and research laboratory of electronics, massachusetts institute of technology, cambridge ma 029 j. Lasers for hyperfine state detection and cooling of ytterbium. We use the laser system to cool small numbers of ytterbium ions confined in a linear paul trap.
Construction of an ytterbium laser cooling and trapping apparatus y. Doppler cooling and subdoppler cooling are studied on one element. The performance is similar to resonantly doubled laser systems, but with greater efficiency, reduced size, expense and fragility. The system achieved laser cooling of ytterbium ions in a.
Light at 399 nm for photoionisation of neutral ytterbium atoms was generated by frequency doubling of a commercial diode laser at 798 nm 16 that provided up to 80 mw in free space. The first observation of net fluorescence cooling of a solid was reported in 1995. Fibers alleviate the challenge of thermal cooling and enable simple architecture without pockels cells, which are needed in a bulk regenerative amplifier. Ytterbium fiber amplifiers set the mark for speed and power. Pdf ytterbiumdoped oxyfluoride nanoglassceramic fibers. A fiber laser or fibre laser in british english is a laser in which the active gain medium is an optical fiber doped with rareearth elements such as erbium, ytterbium, neodymium, dysprosium, praseodymium, thulium and holmium.