Search Results - "Ghavami, Saeed"
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Thermodynamic and thermoeconomic analysis of a novel power and hydrogen cogeneration cycle based on solid SOFC
Published in Renewable energy (01-11-2021)“…To enhance the performance of the thermodynamic systems, reduce the pollutants emission to the environment, and decline the fuel utilization, waste heat…”
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2
Laser Wavelength Measurement Based on a Digital Micromirror Device
Published in IEEE photonics technology letters (01-07-2018)“…We constructed a relatively simple inexpensive wavemeter with completely static parts to measure the laser wavelength accurately based on diffraction from a…”
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3
Oven segmentation scheme for pulse shape and efficiency improvement in a picosecond second harmonic generation
Published in Applied physics. B, Lasers and optics (01-09-2021)“…A multi-segment oven scheme is proposed to control the temperature distribution inside a MgO:PPLN crystal to generate a second-harmonic generation (SHG) pulse…”
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4
Temperature gradient engineered to maintain pulse shape and efficiency of a 532 nm picosecond second-harmonic generation
Published in Applied physics. B, Lasers and optics (01-05-2020)“…We introduced a theoretical model to preserve the quality and the efficiency of a picosecond second-harmonic generation (SHG) in a 30-mm-long LBO crystal which…”
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5
Measuring the squared amplitudes of the Laguerre-Gaussian beams via a single intensity frame
Published in Optics express (14-03-2022)“…We propose the use of an intensity technique to decompose superpositions consisting of two, three, or four basis Laguerre-Gaussian (LG) modes, and measure the…”
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6
Active Control of Thermal Dephasing Effect in High Power Continuous Wave Single-Pass Second Harmonic Generation
Published in IEEE journal of quantum electronics (01-08-2015)“…In this paper, we present a theoretical model that describes the performance of a specific oven configuration used to actively control the effect of thermal…”
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Plasmonic Bragg microcavity as an efficient electro-optic modulator
Published in Optics express (06-07-2020)“…Plasmonic electro-optic modulators might play a pivotal role in the development of compact efficient communication devices. Here, we introduce a novel…”
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8
In situ measurement of laser beam quality
Published in Applied physics. B, Lasers and optics (01-09-2017)“…An innovative optical method is introduced for the beam quality measurement of any arbitrary transverse mode based on the reconstruction of the mode from a…”
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9
Plasmonic nanodisk role reversal: From a whispering gallery mode resonator to a reflective mirage
Published in Optics and laser technology (01-02-2025)“…Given the pivotal role and extensive applications of optical data routing and processing units in optical information technology, we propose a novel mechanism…”
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10
Combination of discrete wavelet transform and ANFIS for post processing of spectroscopic signals
Published in Optical and quantum electronics (01-10-2018)“…We report on the capability of adaptive neuro fuzzy inference system (ANFIS) coupled with discrete wavelet transform (DWT) for the de-noising of absorption…”
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11
Thermal Effects in High-Power Continuous-Wave Single-Pass Second Harmonic Generation
Published in IEEE journal of selected topics in quantum electronics (01-09-2014)“…We present a theoretical model which describes the effects of thermal load distribution on single-pass second harmonic generation (SP-SHG) of high-power…”
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12
Switching the sign of the topological charge of vortex beams via changing the fork grating resolution
Published in Optics and laser technology (01-01-2023)“…•In this paper, the effect of the fork grating resolution on the orbital angular momentum (OAM) of vortex beams is investigated.•Switching of topological…”
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13
Spectrum tuning and stabling of a mid-infrared singly resonant optical parametric oscillator using intracavity etalon: theoretical and experimental investigation
Published in Optical and quantum electronics (01-11-2017)“…In the present work, the effects of an intracavity etalon inside a singly resonant optical parametric oscillator (SRO-OPO) resonator on the power and spectrum…”
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14
Focusing Optimization for High-Power Continuous-Wave Second-Harmonic Generation in the Presence of Thermal Effects
Published in IEEE journal of selected topics in quantum electronics (01-01-2015)“…We study thermal effects in high-power single-pass second-harmonic generation (SP-SHG) of continuous-wave (cw) green radiation in MgO:sPPLT and describe…”
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15
Power instability of singly resonant optical parametric oscillators: theory and experiment
Published in Optics express (03-12-2012)“…We present a theoretical model on the effects of mechanical perturbations on the output power instability of singly-resonant optical parametric oscillators…”
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16
Small signal gain and loss measurement of a CW Nd:YAG laser using an antiresonant ring interferometer
Published in Chinese optics letters (10-06-2012)“…An antiresonant ring (ARR) interferometer configuration is introduced for the characterization of a continuous wave (CW) Nd:YAG laser output. The output of the…”
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17
Performance of discrete wavelet technique in the de-noising of noisy spectrum in the mid-infrared region near 4.5 µm
Published in Optical and quantum electronics (01-12-2016)“…We applied discrete wavelet transform (DWT) technique for de-noising of carbon monoxide (CO) spectrum which is experimentally obtained in the mid-infrared…”
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18
Effects of resonator design on the efficiency of singly-resonant optical parametric oscillator with intracavity sum-frequency generation
Published in Optical and quantum electronics (01-10-2015)“…We present a theoretical model to investigate the performance of an intracavity sum-frequency generation (SFG) inside the ring resonator of a singly-resonant…”
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19
Optical parametric oscillator pumped by relaxation oscillation pulses of a mechanically Q-switched Nd:YAG laser
Published in Applied physics. B, Lasers and optics (01-03-2013)“…We report the generation of mid-infrared pulsed radiation between 2.2 and 3 μm range using a singly-resonant optical parametric oscillator (SR-OPO) based on a…”
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Intracavity configuration for tuning and obtaining simultaneous dual-wavelength operation from CW Nd:YAG laser
Published in 中国光学快报:英文版 (10-07-2011)“…In this letter, a thin slab of glass is used as Fabry-Perot etalon inside a cavity of a continuous wave (CW) Nd:YAG laser to change the behavior of its output…”
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