Browsing by Contributor "Ebrahim-Zadeh, Majid"
Now showing items 1-18 of 18
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Continuous-wave optical parametric oscillators and frequency conversion sources from the ultraviolet to the mid-infrared
(Universitat Politècnica de Catalunya, 2013-10-24)
Doctoral thesis
Open AccessHigh-power, continuous-wave (cw) optical parametric oscillators (OPOs), from the ultraviolet (UV) and visible to the near- and mid-infrared (IR) wavelength range, are of interest for a variety of applications such as ... -
Design and characterization of fs OPO for the near-to mid-infrared
(Universitat Politècnica de Catalunya, 2012-09-12)
Master thesis
Open Access[ANGLÈS] We demonstrate a stabilized phase-locked divide-by-2 synchronously pumped optical parametric oscillator (SPOPO) based on BiB3O6 (BIBO) a crystal with type I interaction in the xz plane operating in degenerate ... -
Development of high-power picosecond fiber-based ultraviolet source
(Universitat Politècnica de Catalunya, 2014-09-08)
Master thesis
Open Access[ANGLÈS] We report a high-power picosecond ultraviolet source at 266 nm in a compact design based on single-pass fourth harmonic generation and mode-locked Yb-fiber laser. The configuration has two stages: SHG of 1064 nm ... -
High-Harmonic-Repetition-Rate, Extended-Cavity, 1-GHz Tunable Femtosecond Optical Parametric Oscillator
(Universitat Politècnica de Catalunya, 2009-07-09)
Master thesis
Open AccessThis work is devoted to the experimental demonstration of a novel concept for the generation of femtosecond pulses at the harmonics of the pump repetition rate in a synchronously-pumped optical parametric oscillator (SPOPO) ... -
High-power fiber-laser-pumped picosecond nonlinear optical sources from the near- to mid-infrared
(Universitat Politècnica de Catalunya, 2018-07-24)
Doctoral thesis
Open AccessUltrafast picosecond coherent sources in the near-to-mid-infrared (IR) spectral range are of great interest for a variety of applications such as pump-probe spectroscopy, remote sensing, photobiology and novel upconversion ... -
High-power, continuous-wave optical parametric oscillators from visible to near-infrared
(Universitat Politècnica de Catalunya, 2009-07-01)
Doctoral thesis
Open AccessThis thesis presents the development of a new class of high-power, continuous-wave (cw) optical parametric oscillators (OPOs) with extended tunability from visible to near-infrared (near-IR). While lasers have been in use ... -
High-power, fiber-laser-pumped frequency conversion sources for the ultraviolet
(Universitat Politècnica de Catalunya, 2015-11-26)
Doctoral thesis
Open AccessHigh-power, stable, high-repetition-rate, picosecond ultraviolet (UV) sources are of crucial importance for a variety of applications, such as atmospheric sensing, spectroscopy or optical data storage. Further, precise ... -
High-power, fiber-laser-pumped optical parametric oscillators from the visible to mid-infrared
(Universitat Politècnica de Catalunya, 2012-01-18)
Doctoral thesis
Open AccessHigh-power, continuous-wave (cw), mid-infrared (mid-IR) laser sources are of interest for variety of applications such as trace gas detection and remote sensing, which require broad spectral coverage to address the most ... -
Interferometric output stabilization of a femtosecond optical parametric oscillator
(Universitat Politècnica de Catalunya, 2013-05-09)
Master thesis
Open Access[ANGLÈS] In this project we present a new technique to stabilize the cavity length of a tunable synchronously-pumped OPO and consequently achieve wavelength stability using more standard equipment commonly used to stabilize ... -
Investigation of Heavily Doped Congruent Lithium Tantalite for Single-pass Second Harmonic Generation
(Universitat Politècnica de Catalunya, 2013-05-09)
Master thesis
Open Access[ANGLÈS] We report a compact , practical, green sources based on single-pass second harmonic generation(SHG) of a picosecond Yb-fiber laser in 10-mm-long, heavily MgO doped congruent lithium tantalite (MgO:cPPLT). The ... -
Novel femtosecond optical parametric oscillators in the infrared
(Universitat Politècnica de Catalunya, 2019-05-26)
Doctoral thesis
Open AccessHigh-repetition-rate femtosecond laser sources are essential laboratory tools for spectroscopy, microscopy, amongst other applications. With the relative length of one femtosecond to one second being similar to the length ... -
Novel nonlinear frequency conversion sources in the mid-infrared
(Universitat Politècnica de Catalunya, 2018-12-18)
Doctoral thesis
Open AccessThe goal of this thesis has been the development of a new class of advanced solid-state photonic sources for the mid-infrared (mid-IR) spectral regions, where there exists a severe shortage of practical coherent laser ... -
Novel pulsed optical parametric sources in the mid-infrared and the application towards high-resolution molecular spectroscopy
(Universitat Politècnica de Catalunya, 2019-05-03)
Doctoral thesis
Open AccessThe mid-infrared (mid-IR) spectral region coincides with fundamental rotational-vibrational transitions of a large number of molecules in the gas phase. The strong interaction between mid-IR light sources and these gaseous ... -
Picosecond, high-repetition-rate, optical parametric sources from the ultraviolet to the deep-infrared
(Universitat Politècnica de Catalunya, 2018-10-18)
Doctoral thesis
Open AccessHigh-power, high-repetition-rate coherent picosecond sources with high beam quality are of great interest for many scientific and technological applications. For example, coherent sources at the ultraviolet (UV) spectrum ... -
Single-Stage Ti:sapphire-Pumped Deep-Infrared Femtosecond Optical Parametric Oscillator based on CdSiP2
(IEEE, 2018-02-20)
Conference lecture
Open AccessWe report a high-repetition-rate femtosecond optical parametric oscillator (OPO) for the deep-infrared (deep-IR) based on the nonlinear optical crystal, CdSiP 2 (CSP), pumped directly by a Ti:sapphire laser, for the first ... -
Temporal and spectral characterization of near-IR femtosecond optical parametric oscillator pulses
(Universitat Politècnica de Catalunya, 2009-09-09)
Master thesis
Open AccessRecently, there has been growing interest in ultrashort pulse measurement techniques. The aim of this work is to utilize interferometric autocorrelator in order to characterize near- IR femtosecond optical parametric ... -
Ultrafast optical parametric oscillators : novel systems, techniques, and concepts
(Universitat Politècnica de Catalunya, 2014-10-31)
Doctoral thesis
Open AccessIn this thesis, we have demonstrated various ultrafast optical parametric oscillators (OPOs) based on different nonlinear media. The thesis consists of OPO systems, novel techniques, designs, and concepts that has facilitated ... -
Versatile nonlinear frequency conversion sources in the near- and mid-infrared
(Universitat Politècnica de Catalunya, 2022-03-11)
Doctoral thesis
Open AccessTunable laser sources in different spectral regions are of interest for a variety of applications including spectroscopy, trace gas sensing, medical diagnostics, LIDAR and material processing. Existing lasers have limited ...
