Controlling the wavelength of a high power diode laser using thermoelectric cooler

Fareed F. Rasheed

Details

Publication Date

Tue May 01 2012

Journal Name

Iraqi Journal Of Physics

Volume

10

Issue Number

17

Choose Citation Style

Statistics

View publication

30

Abstract Views

850

Galley Views

548

Statistics

Controlling the wavelength of a high power diode laser using thermoelectric cooler

Diode laser

Thermoelectric cooler

Fareed F. Rasheed

...Show More Authors

The present work includes a design and characteristics study of a controlling the wavelength of high power diode laser by thermoelectric cooler [TEC] . The work includes the operation of the [TEC] to control the temperature of the diode laser between ( 0- +30) °C by changing the resistance of thermistor. We can control a limited temperature of a diode laser by changing the phase cooling between hot and cold faces of the diode, this process can be attempted by comparator type [LM –311] .The theoretical results give a model for controlling the temperature with, the suitable wavelength.

View Publication Preview PDF

Quick Preview PDF

Publication Date

Tue Nov 09 2021

Journal Name

Abu Dhabi International Petroleum Exhibition & Conference

Numerical Simulation of Gas Lift Optimization Using Artificial Intelligence for a Middle Eastern Oil Field

evolutionary algorithm

gas lift

artificial intelligence

upstream oil & gas

machine learning

optimization problem

correlation

presented

allocation

reservoir pressure

Mohammed Ahmed

Omar F.

Dhifaf Jaafar

Haider Abdulmuhsin

Mustafa Alaulddin

...Show More Authors

Abstract<p>Artificial lift techniques are a highly effective solution to aid the deterioration of the production especially for mature oil fields, gas lift is one of the oldest and most applied artificial lift methods especially for large oil fields, the gas that is required for injection is quite scarce and expensive resource, optimally allocating the injection rate in each well is a high importance task and not easily applicable. Conventional methods faced some major problems in solving this problem in a network with large number of wells, multi-constrains, multi-objectives, and limited amount of gas. This paper focuses on utilizing the Genetic Algorithm (GA) as a gas lift optimization algorit</p> ... Show More

View Publication

(8)

(5)

Publication Date

Tue Oct 01 2019

Journal Name

Environmental Earth Sciences

Urban geochemistry assessment using pollution indices: a case study of urban soil in Kirkuk, Iraq

Salih

Jawdat Abdul Jalil M. Zaki

...Show More Authors

View Publication

(7)

Publication Date

Mon Dec 09 2024

Journal Name

International Journal Of Mechatronics And Applied Mechanics

DESIGN OF A HYDRAULIC MOTION CONTROL SYSTEM USING TWO BACKSTEPPING TIME VARYING SLIDING MODE STRATEGIES

Inlet throttling velocity control system

Robust control

Sliding mode control

Uncertainty

Aws

...Show More Authors

A second-order sliding mode control is used for high-order uncertain plants using equivalent control approach to improve the performance of control systems. They combine backstepping with quasi-continuous controller and twisting controllers. This paper considers a two of the most popular controllers that are used to solve the nonlinearities problem which are the backstepping quasi-continuous control (BQCC) and backstepping twisting controllers to control the angular velocity of a hydraulic motor to improve tracking performance and robustness to uncertainties. For the system dynamics, a linear state feedback with suitable high gain was designed as the virtual controller, where steady state error can be made arbitrarily small according to the

View Publication Preview PDF

(2)

Publication Date

Mon Jan 01 2018

Journal Name

Ndt & E International

Porosity evaluation of in-service thermal barrier coated turbine blades using a microwave nondestructive technique

Muhammad F.

Ghassan N.

Christopher I.

Robin

...Show More Authors

View Publication

(21)

(23)

Publication Date

Tue Oct 26 2021

Journal Name

Series On Biomechanics

Monitoring and analysis of plantar pressure map and foot motions using a wearable sensing system

H.

Z.

D.

L.

A.

...Show More Authors

Peer-Reviewed Journal

View Publication

(5)

Publication Date

Thu Aug 01 2019

Journal Name

مجلة العلوم الاقتصادية والإدارية

Improving" Jackknife Instrumental Variable Estimation method" using A class of immun algorithm with practical application

Redha

...Show More Authors

Improving" Jackknife Instrumental Variable Estimation method" using A class of immun algorithm with practical application

Publication Date

Sun Jun 07 2015

Journal Name

Baghdad Science Journal

A Solution of Second Kind Volterra Integral Equations Using Third Order Non-Polynomial Spline Function

Volterra integral equation

non-polynomial spline function

cubic spline function.

Sarah H.

Mohammed Ali

Saba N.

...Show More Authors

In this paper, third order non-polynomial spline function is used to solve 2nd kind Volterra integral equations. Numerical examples are presented to illustrate the applications of this method, and to compare the computed results with other known methods.

View Publication Preview PDF

(2)

Publication Date

Fri Jan 01 2021

Journal Name

Journal Of Engineering

A Computational Fluid Dynamics Investigation of using Large-Scale Geometric Roughness Elements in Open Channels

APDL

CFD

Configurations

Roughness Elements

Velocity Distributions

Iman A.

Riyadh Z.

...Show More Authors

The hydraulic behavior of the flow can be changed by using large-scale geometric roughness elements in open channels. This change can help in controlling erosions and sedimentations along the mainstream of the channel. Roughness elements can be large stone or concrete blocks placed at the channel's bed to impose more resistance in the bed. The geometry of the roughness elements, numbers used, and configuration are parameters that can affect the flow's hydraulic characteristics. In this paper, velocity distribution along the flume was theoretically investigated using a series of tests of T-shape roughness elements, fixed height, arranged in three different configurations, differ in the number of lines of roughness element

View Publication Preview PDF

(6)

Publication Date

Thu Jun 01 2017

Journal Name

Journal Of The American Medical Directors Association

Comprehensive Literature Review of Factors Influencing Medication Safety in Nursing Homes: Using a Systems Model

Ali Azeez

William R.

...Show More Authors

View Publication

(52)

(58)

Publication Date

Sat Feb 11 2023

Journal Name

Applied Sciences

A Preliminary Study and Implementing Algorithm Using Finite State Automaton for Remote Identification of Drones

Charalampos

Dimitrios

Izzat

Georgios

Mu’azu Jibrin

Panagiotis

...Show More Authors

Electronic remote identification (ER-ID) is a new radio frequency (RF) technology that is initiated by the Federal Aviation Authorities (FAA). For security reasons, traffic control, and so on, ER-ID has been applied for drones by the FAA to enable them to transmit their unique identification and location so that unauthorized drones can be identified. The current limitation of the existing ER-ID algorithms is that the application is limited to the Wi-Fi and Bluetooth wireless controllers, which results in a maximum range of 10–20 m for Bluetooth and 50–100 m for Wi-Fi. In this study, a mathematical computing technique based on finite state automaton (FSA) is introduced to expand the range of the ER-ID RF system and reduce the ene

View Publication

(5)

(7)

1 2 ... 139 140 141 142 ... 2933 2934