The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We observed ultralow-threshold Raman lasing using direct free-space excitation of whispering gallery modes in a deformed microtoroid. This simple and robust excitation method can overcome the inadequacies of taper coupling.
We report an observation of soliton rains in normal dispersion Yb fiber laser. The cavity consisted of a narrow filter and a broad birefringent plate filter. Soliton rain was obtained in the weak mode-locking regime.
We report high power operation of a Kagome-type HC-PCF at 1 μm. We demonstrate guidance of thin disk laser beam with powers in excess of 100 W in cw and 75 W in modelocked operation.
We demonstrate sub-50 fs pulses generation directly from a 750 MHz repetition rate dispersion managed Yb: fiber ring laser by precision compensation of the intracavity dispersion.
We present the laser architecture that will be constructed as a pump laser for a Multi-TW OPCPA component test laboratory using glass rod amplifiers and a regenerative amplifier seeded by a modulated fiber laser source.
The concept of a "dissipative soliton" provides an excellent framework for understanding complex mode-locked laser pulse dynamics from a unified picture. It has stimulated innovative laser cavity designs in the past few years. This tutorial lecture provides conceptual pictures illustrated with universal dynamics, highlights recent achievements and prospects for mode-locked laser development.
We fabricated Er-Yb codoped tellurite spheres for strong upconversion WGM lasing with Q up to 27,000 for 15μm diameter and achieved the index sensitivity of 8.8nm/RIU. Strong amplitude modulation in the modes was also observed.
Synchronous high-power Yb: and Tm:amplifiers both coherently seeded by the same broadband passively phase stable Er:fiber system are demonstrated. Microjoule-level pulse energy and sub-200-fs operation at a repetition rate of 10 MHz are obtained.
The impact of gold nanoparticles to stress fibers (SFs) in HUVEC cells was studied by cutting the SFs from their mid-point with a femtosecond laser and recording their recoil dynamics in the real time.
A fiber-coupled, 10-kHz, UV-PLIF and PIV combined detection system employing a common 6-m-long optical fiber is developed for simultaneous 2D fields of OH radical concentration and velocity measurements in practical combustion facilities.
10ns pulses with 9.1mJ energy at 5 kHz repetition rate and in a diffraction-limited output beam are generated by a nanosecond-pulsed fiber amplifier system based on 35μm and 55μm core Yb-doped Chrially-Coupled-Core (CCC) fibers.
We report on a 200W, 2mJ, 25ns MOPA fiber laser, the last stage of which has a hybrid gain fiber composed of large-core-diameter and small-core diameter Yb doped fibers.
Measurements of the free running carrier envelope offset frequency (fceo) linewidth of a similariton based optical frequency comb show that the frequency noise of the laser is independent of net cavity dispersion.
A refractive-index change is written inside an optical fiber close to the end face by femtosecond laser light. The induced phase change is measured by analyzing the far-field intensity profiles before and after the irradiation.
110 MHz high repetition rate soliton mode-locked fiber laser with 40 mW high average power was demonstrated using carbon nanotube polyimide film. Super continuum at 1.7 um was generated and ultrahigh resolution OCT was demonstrated.
A 3-GHz femtosecond Raman soliton source (tunable between 1.06–1.22 μm) is demonstrated based on an Yb-fiber laser. The resulting source produces 350-mW average power at 1.22 μm with 40-nm bandwidth and ∼100 fs pulse duration.
We report short (5 ns), high-power (>1 W), spectrally narrow optical pulses generated by a 1060-nm slab-coupled optical waveguide laser (SCOWL) soldered directly to a custom BiCMOS driver chip.
We will report on our effort to scale the pulse energy and peak power from ultrashort pulse Tm doped fiber laser systems, with >1 μJ pulse energy within 300 fs duration after compression.
We demonstrate an Er:fiber ring laser operated at the fundamental repetition rate of 325 MHz. Two gain fibers with opposite dispersion were combined both for compactness and intra-cavity dispersion compensation.
Many important atmospheric constituents can be detected with infrared laser absorption spectroscopy. This talk reviews the engineering challenges, opportunities, and selected scientific results from recent airborne campaigns.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.