Author: Blake Rodgers
Publisher:
ISBN: 9781423546948
Category :
Languages : en
Pages : 92
Book Description
The main objective of this thesis was to demonstrate the feasibility of combining and cleaning up multiple laser beams via Stimulated Brillouin Scattering (SBS) in a multi-mode optical fiber. Beam combining via SBS in an optical fiber is of interest because of the low SBS threshold power in an optical fiber allowing low power diode laser beams to be combined into one high power beam. SBS theory and some of the important historical results are described briefly. The experimental results clearly indicate that SBS in multi- mode optical fiber can indeed combine laser beams and clean up the beams at the same time. Both single-pass and ring-cavity geometries were used successfully. The SBS threshold power for the 9.5 micron diameter fiber was 26.5 +/- 0.5 mW for a single-pass setup and 19.7 +/- 0.5 mW for a ring-cavity setup. The SBS power conversion slope efficiency was measured to be 42% for the single-pass setup and 52% for the ring-cavity setup. The SBS signal exhibited both periodic oscillations and random amplitude fluctuations, which are believed to be due to low levels of power used for the experiment. The polarization of the SBS signal was the same as the input laser beam.
Laser Beam Combining and Cleanup Via Stimulated Brillouin Scattering in Multi-mode Optical Fibers
Author: Blake Rodgers
Publisher:
ISBN: 9781423546948
Category :
Languages : en
Pages : 92
Book Description
The main objective of this thesis was to demonstrate the feasibility of combining and cleaning up multiple laser beams via Stimulated Brillouin Scattering (SBS) in a multi-mode optical fiber. Beam combining via SBS in an optical fiber is of interest because of the low SBS threshold power in an optical fiber allowing low power diode laser beams to be combined into one high power beam. SBS theory and some of the important historical results are described briefly. The experimental results clearly indicate that SBS in multi- mode optical fiber can indeed combine laser beams and clean up the beams at the same time. Both single-pass and ring-cavity geometries were used successfully. The SBS threshold power for the 9.5 micron diameter fiber was 26.5 +/- 0.5 mW for a single-pass setup and 19.7 +/- 0.5 mW for a ring-cavity setup. The SBS power conversion slope efficiency was measured to be 42% for the single-pass setup and 52% for the ring-cavity setup. The SBS signal exhibited both periodic oscillations and random amplitude fluctuations, which are believed to be due to low levels of power used for the experiment. The polarization of the SBS signal was the same as the input laser beam.
Publisher:
ISBN: 9781423546948
Category :
Languages : en
Pages : 92
Book Description
The main objective of this thesis was to demonstrate the feasibility of combining and cleaning up multiple laser beams via Stimulated Brillouin Scattering (SBS) in a multi-mode optical fiber. Beam combining via SBS in an optical fiber is of interest because of the low SBS threshold power in an optical fiber allowing low power diode laser beams to be combined into one high power beam. SBS theory and some of the important historical results are described briefly. The experimental results clearly indicate that SBS in multi- mode optical fiber can indeed combine laser beams and clean up the beams at the same time. Both single-pass and ring-cavity geometries were used successfully. The SBS threshold power for the 9.5 micron diameter fiber was 26.5 +/- 0.5 mW for a single-pass setup and 19.7 +/- 0.5 mW for a ring-cavity setup. The SBS power conversion slope efficiency was measured to be 42% for the single-pass setup and 52% for the ring-cavity setup. The SBS signal exhibited both periodic oscillations and random amplitude fluctuations, which are believed to be due to low levels of power used for the experiment. The polarization of the SBS signal was the same as the input laser beam.
Laser Beam Combining and Cleanup Via Stimulated Brillouin Scattering in Multi-mode Optical Fibers
Author: Blake C. Rodgers (1LT, USAF.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 158
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 158
Book Description
Investigation of Laser Beam Combining and Clean-up Via Seeded Stimulated Brillouin Scattering in Multimode Optical Fibers
Author: Bryan J. Choi
Publisher:
ISBN:
Category : Brillouin scattering
Languages : en
Pages : 80
Book Description
Publisher:
ISBN:
Category : Brillouin scattering
Languages : en
Pages : 80
Book Description
Multiple Channel Laser Beam Combination and Phasing Using Stimulated Brillouin Scattering in Optical Fibers
Author: Brent W. Grime
Publisher:
ISBN:
Category : Brillouin scattering
Languages : en
Pages : 316
Book Description
Publisher:
ISBN:
Category : Brillouin scattering
Languages : en
Pages : 316
Book Description
Laser Intensity Scaling Through Stimulated Scattering in Optical Fibers
Author: Timothy H. Russell
Publisher:
ISBN: 9781423525028
Category : Electromagnetic waves
Languages : en
Pages : 204
Book Description
The influence of stimulated scattering on laser intensity in fiber optic waveguides is examined. Stimulated Brillouin scattering (SBS) in long, multimode optical waveguides is found to generate a Stokes beam that propagates in the fiber LP01 mode. Additionally, the same process is found to combine multiple laser beams into a single spatially coherent source. Limitations in beam cleanup and combining are also investigated to identify ways to overcome them. The last portion of the dissertation theoretically examines suppression of stimulated Raman scattering in fibers to eliminate the restriction this imposes on the power of a fiber laser or amplifier. The suppression was modeled using both a holmium dopant and adding a long period grating to the fiber. Both methods were shown to have a significant effect on the SRS threshold.
Publisher:
ISBN: 9781423525028
Category : Electromagnetic waves
Languages : en
Pages : 204
Book Description
The influence of stimulated scattering on laser intensity in fiber optic waveguides is examined. Stimulated Brillouin scattering (SBS) in long, multimode optical waveguides is found to generate a Stokes beam that propagates in the fiber LP01 mode. Additionally, the same process is found to combine multiple laser beams into a single spatially coherent source. Limitations in beam cleanup and combining are also investigated to identify ways to overcome them. The last portion of the dissertation theoretically examines suppression of stimulated Raman scattering in fibers to eliminate the restriction this imposes on the power of a fiber laser or amplifier. The suppression was modeled using both a holmium dopant and adding a long period grating to the fiber. Both methods were shown to have a significant effect on the SRS threshold.
Stimulated Brillouin Scattering
Author: M J Damzen
Publisher: CRC Press
ISBN: 1420033468
Category : Science
Languages : en
Pages : 207
Book Description
Stimulated Brillouin scattering (SBS) is the most important example of a stimulated scattering process-light scattering that occurs when the intensity of the light field itself affects the propagating medium. A phenomenon that has been known of for some 35 years in solid state laser research, it has recently become relevant in the optical fiber ind
Publisher: CRC Press
ISBN: 1420033468
Category : Science
Languages : en
Pages : 207
Book Description
Stimulated Brillouin scattering (SBS) is the most important example of a stimulated scattering process-light scattering that occurs when the intensity of the light field itself affects the propagating medium. A phenomenon that has been known of for some 35 years in solid state laser research, it has recently become relevant in the optical fiber ind
Conference Proceedings
Author:
Publisher:
ISBN:
Category : Electrooptics
Languages : en
Pages : 548
Book Description
Publisher:
ISBN:
Category : Electrooptics
Languages : en
Pages : 548
Book Description
Nonlinear Optics
Author: Natalia Kamanina
Publisher: BoD – Books on Demand
ISBN: 9535101315
Category : Technology & Engineering
Languages : en
Pages : 240
Book Description
Rapid development of optoelectronic devices and laser techniques poses an important task of creating and studying, from one side, the structures capable of effectively converting, modulating, and recording optical data in a wide range of radiation energy densities and frequencies, from another side, the new schemes and approaches capable to activate and simulate the modern features. It is well known that nonlinear optical phenomena and nonlinear optical materials have the promising place to resolve these complicated technical tasks. The advanced idea, approach, and information described in this book will be fruitful for the readers to find a sustainable solution in a fundamental study and in the industry approach. The book can be useful for the students, post-graduate students, engineers, researchers and technical officers of optoelectronic universities and companies.
Publisher: BoD – Books on Demand
ISBN: 9535101315
Category : Technology & Engineering
Languages : en
Pages : 240
Book Description
Rapid development of optoelectronic devices and laser techniques poses an important task of creating and studying, from one side, the structures capable of effectively converting, modulating, and recording optical data in a wide range of radiation energy densities and frequencies, from another side, the new schemes and approaches capable to activate and simulate the modern features. It is well known that nonlinear optical phenomena and nonlinear optical materials have the promising place to resolve these complicated technical tasks. The advanced idea, approach, and information described in this book will be fruitful for the readers to find a sustainable solution in a fundamental study and in the industry approach. The book can be useful for the students, post-graduate students, engineers, researchers and technical officers of optoelectronic universities and companies.
Technical Digest
Author:
Publisher:
ISBN:
Category : Electrooptics
Languages : en
Pages : 542
Book Description
Publisher:
ISBN:
Category : Electrooptics
Languages : en
Pages : 542
Book Description
Optics Letters
Author:
Publisher:
ISBN:
Category : Optics
Languages : en
Pages : 808
Book Description
Publisher:
ISBN:
Category : Optics
Languages : en
Pages : 808
Book Description