HeNe Laser Mode Sweep The following set of 20 slides illustrate how the longitudinal modes of a typical 2-3 mW HeNe laser sweep or cycle through the neon.

Slides:



Advertisements
Similar presentations
IN The Name of GOD A. Abolhasani MD A. Shojaee MD BASIR EYE CENTER TERHRAN – IRAN There is not a financial interest in the products or companies mentioned.
Advertisements

Precision optical experiments require lasers whose frequency and/or intensity remain highly stable over time. Common sealed tube helium neon (He-Ne) lasers.
Wave Nature of Light  Refraction  Interference  Young’s double slit experiment  Diffraction  Single slit diffraction  Diffraction grating.
HP/Agilent 5517 Zeeman-Split HeNe Laser Mode Sweep Animation Sam's Laser FAQ ( Copyright © , Samuel.
HeNe Laser Mode Sweep The following animation illustrates how the longitudinal modes of a typical mW HeNe laser sweep or cycle through the neon gain.
HeNe Laser Flipper Mode Sweep
HeNe Laser Mode Sweep The following animation illustrates how the longitudinal modes of a typical 2-3 mW HeNe laser sweep or cycle through the neon gain.
Chapter 13 Sound.
Wave Properties Propagation Nation Wave Funomena 1 Wave Funomena 2 Interfearence $100 $200 $300 $400 $500.
FREQUENCY SHIFT KEYING
May Chuck DiMarzio, Northeastern University ECE-1466 Modern Optics Course Notes Part 9 Prof. Charles A. DiMarzio Northeastern University.
DYE LASERS Mehmet Mustafa KARABULUT. TABLE OF CONTENTS 1. Working Principles 2. CW and Pulse Modes 3. Applications 4. Properties 5. Recent.
EE 230: Optical Fiber Communication Lecture 9 From the movie Warriors of the Net Light Sources.
HP/Agilent 5517 Zeeman-Split HeNe Laser Mode Sweep Sam’s Laser FAQ ( Copyright © , Samuel M. Goldwasser,
Sam’s Laser FAQ ( Copyright © , Samuel M. Goldwasser, All Rights Reserved. HeNe Laser Mode Sweep The.
COMPUTER MODELING OF LASER SYSTEMS
PRINCIPLES OF MEASUREMENT AND INSTRUMENTATION EKT 112
Normal HeNe Laser Mode Sweep Animation Sam's Laser FAQ ( Copyright © , Samuel M. Goldwasser, All Rights.
Chapter 16 Wave Motion.
HeNe Laser Mode Sweep The following set of 30 slides illustrate how the longitudinal modes of a typical mW HeNe laser sweep or cycle through the.
Physics 110G Waves TOC 1 Transverse Waves in Space Transverse Waves in Time Longitudinal Waves in Space Longitudinal Waves in Time.
HeNe Laser Mode Sweep The following set of 10 slides illustrate how the longitudinal modes of a typical mW HeNe laser sweep or cycle through the.
Lecture 38 Lasers Final Exam next week. LASER L ight A mplification by S timulated E mission of R adiation.
1 Mixers  Mixers plays an important role in both the transmitter and the receiver  Mixers are used for down frequency conversion in the receiver  Mixers.
Waves - I Chapter 16 Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
Copyright © Cengage Learning. All rights reserved. 10 Parametric Equations and Polar Coordinates.
1 L8 Lasers UConn ECE /10/2015 F. Jain Operating parameters: Operating wavelength: green, red, blue, fiber optic wavelength 1.55 microns Optical.
Solution Due to the Doppler effect arising from the random motions of the gas atoms, the laser radiation from gas-lasers is broadened around a central.
 Systems of linear inequalities are sets of two or more linear inequalities involving two or more variables.  Remember, the highest power of any variable.
Chapter 13 VibrationsandWaves. Hooke’s Law F s = - k x F s = - k x F s is the spring force F s is the spring force k is the spring constant k is the spring.
 The outer boundary of a circle or other curvilinear figure is…… circumference  One part or unit of each hundred or a fraction is called a…… percent.
Warm Up: 1. Use the word constant in a sentence, as you would use it in science. 2. Use the word “constantly” in a sentence as you would use in every day.
Lecture 6. Polarization splitter based Filters Acoustooptic Tunable Filters.
PROPERTIES OF LASER BEAMS  Laser beam is generated in a specific wave length by the interaction of electromagnetic wave with the active medium.  To represent.
VCSEL High Speed Drivers
HAWKES LEARNING SYSTEMS Students Matter. Success Counts. Copyright © 2013 by Hawkes Learning Systems/Quant Systems, Inc. All rights reserved. Section 6.3.
Chapter 16 Lecture One: Wave-I HW1 (problems): 16.12, 16.24, 16.27, 16.33, 16.52, 16.59, 17.6, Due.
Development of high-power and stable laser for gravitational wave detection Mio Laboratory Kohei Takeno.
Waves - I Chapter 16 Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
If wave 1 displaces a particle in the medium by D 1 and wave 2 simultaneously displaces it by D 2, the net displacement of the particle is simply D 1 +
Introduction: Vectors and Integrals. Vectors Vectors are characterized by two parameters: length (magnitude) direction These vectors are the same Sum.
Transmission of a Fabry-Perot Resonator This slideshow demonstrates how the transmission through a plane-plane-plane Fabry-Perot resonator, as a function.
Simple Harmonic Motion Simple harmonic motion (SHM) refers to a certain kind of oscillatory, or wave-like motion that describes the behavior of many physical.
Chapter 14 Vibrations and Waves. Hooke’s Law F s = - k x F s is the spring force k is the spring constant It is a measure of the stiffness of the spring.
Warm Up 8/31  Why do we need to document experiments?  List Newton’s 3 Laws of Motion.
Longitudinal and Transverse Wave Motion. Mechanical Waves Mechanical Waves are waves which propagate through a material medium (solid, liquid, or gas)
Date of download: 7/11/2016 Copyright © 2016 SPIE. All rights reserved. Typical temperature increase inside (solid line) and on the surface (dashed line)
HeNe Laser Mode Sweep 400 mm (~16 Inch) Cavity Length
Journal of Vision. 2015;15(13):22. doi: / Figure Legend:
Date of download: 10/13/2017 Copyright © ASME. All rights reserved.
Helium-neon Laser.
Historical facts The Helium-Neon laser was the first continuous laser.
Reading a Normal Curve Table
Copyright © Cengage Learning. All rights reserved.
Date of download: 1/1/2018 Copyright © ASME. All rights reserved.
Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
Chp Properties of Mechanical Waves
Helium-Neon laser Henrik Porte.
A Motion Direction Map in Macaque V2
Surface emitting diode laser
Triangle Theorems.
Helium-Neon Laser TIT GROUP Of INSTITUTIONS, BHOPAL [M.P.] By
Color and Polarization
Ken-Chia Chang, and Ming-Dar Wei* *
Copyright © Cengage Learning. All rights reserved.
DIFFRACTION AND INTERFERENCE
Waves O 1.2 Wave Properties.
Basic Practice of Statistics - 3rd Edition The Normal Distributions
Copyright © Cengage Learning. All rights reserved.
Superposition of Waves
Presentation transcript:

HeNe Laser Mode Sweep The following set of 20 slides illustrate how the longitudinal modes of a typical 2-3 mW HeNe laser sweep or cycle through the neon gain curve as the laser warms up and the cavity length increases due to thermal expansion. 200 mm (~8 Inch) Cavity Length Sam's Laser FAQ ( Copyright © , Samuel M. Goldwasser, All Rights Reserved

Cavity Modes and Lasing Modes Cavity modes that fall within the region of the neon gain curve which is greater than the lasing threshold (net gain > 1) will result laser oscillation and a lasing mode with an output power approximately proportional to its amplitude compared to the lasing threshold. These are the longitudinal modes of the laser. The total output power of the laser is equal to the sum of all the longitudinal modes. Sam's Laser FAQ ( Copyright © , Samuel M. Goldwasser, All Rights Reserved

Mode Sweep As the cavity length increases due to thermal expansion, the wavelengths of the cavity modes (and longitudinal modes) increase (moving to the left). When a cavity mode passes the point on the left (longer wavelengths) where the gain becomes less than 1, a new mode will eventually appear on the right to replace it. For this fairly short HeNe laser, at most 3 modes are oscillating at any given time.. Sam's Laser FAQ ( Copyright © , Samuel M. Goldwasser, All Rights Reserved

Polarization Adjacent longitudinal modes in random polarized HeNe lasers are usually orthogonally polarized with respect to an orientation determined by the laser tube construction. These are denoted red and blue. When one mode is approximately centered on the neon gain curve, the other two modes will have the orthogonal polarization and can be blocked Longitudinal modes in a linearly polarized HeNe laser will all have the same polarization orientation but similar amplitudes for the same size laser. Sam's Laser FAQ ( Copyright © , Samuel M. Goldwasser, All Rights Reserved

Start slide show to view mode sweep. (Left and right arrows may be used to change mode sweep speed or to simulate the feedback control of a stabilized HeNe laser by centering one mode on the neon gain curve or by balancing two modes on either side of the neon gain curve) Sam's Laser FAQ ( Copyright © , Samuel M. Goldwasser, All Rights Reserved

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com Inc. All rights reserved.