Visualizing the mode evolution process in passive and active cavities based on the NIW-Principle

Narasimha S. Prasad; Chandrasekhar Roychoudhuri

doi:10.1117/12.895167

28 September 2011 Visualizing the mode evolution process in passive and active cavities based on the NIW-Principle

Narasimha S. Prasad, Chandrasekhar Roychoudhuri

Proceedings Volume 8121, The Nature of Light: What are Photons? IV; 81211D (2011) https://doi.org/10.1117/12.895167
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

This paper will present results of computer models depicting the evolution of diffractive processes through passive and active cavities (traditional stable resonator and single mode fiber) as the number of passes (or the length of propagation) increases. The objective is to visualize how the spatially stable eigen-modes evolve with propagation. Our core assumptions are the validity of the Huygens-Fresnel hypothesis of secondary wavelets and the recently articulated Non- Interaction of Waves (NIW) principle in this conference series. The NIW-principle implies that even the diffracted secondary wavelets propagate conjointly but without re-arranging their spatial energy distribution unless one inserts some interacting material medium within the diffracting beam. Accordingly, we anticipate that the evolution of the measurable energy distribution in the diffraction pattern will be different in the presence of gain medium whose gain profile varies in the direction orthogonal to the cavity axis. We also anticipate that a cavity with high gain profile will generate the stable spatial eigen-mode with a fewer number of passes through the cavity than with lower gain, or no gain. We will also present the mode evolution process when the seed signal is a pulse of length that is shorter than that of the cavity. We believe this paper will provide useful insights to the students who are introduced to the concept of spatially well defined Gaussian laser modes for the first time.

Citation Download Citation

Narasimha S. Prasad and Chandrasekhar Roychoudhuri "Visualizing the mode evolution process in passive and active cavities based on the NIW-Principle", Proc. SPIE 8121, The Nature of Light: What are Photons? IV, 81211D (28 September 2011); https://doi.org/10.1117/12.895167

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Wave propagation

Visualization

Signal processing

Wavelets

Beam propagation method

Diffraction

Mirrors

Show All Keywords

Keywords/Phrases

Search In:

Publication Years