Investigation of non-linear energy transfer dynamics of erbium in yttrium aluminum garnet (Conference Presentation)

Christian Vega; Ramesh K. Shori; Oscar Stafsudd

doi:10.1117/12.2515255

13 March 2019 Investigation of non-linear energy transfer dynamics of erbium in yttrium aluminum garnet (Conference Presentation)

Christian Vega, Ramesh K. Shori, Oscar Stafsudd

Author Affiliations +

Proceedings Volume 10896, Solid State Lasers XXVIII: Technology and Devices; 1089608 (2019) https://doi.org/10.1117/12.2515255
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

Yttrium Aluminum Garnet (YAG) crystals doped with Erbium have posed an interesting position in the field of rare earth solid state lasers as they possess the property of self-saturation, in which the upper energy level in a laser has a much shorter lifetime than that of the lower level.The non-linear energy transfer dynamics of Er:YAG are modeled under high resonant pump conditions. Specifically the multi-photon effect known as excited state absorption (ESA) is modeled by measuring the cross section in a single crystal Er:YAG sample utilizing a pump and probe technique. The measured ESA cross section is then included in the rate equation modeling that has typically been ignored such an effect when modeling the non-linear ion to ion interactions. By pumping with selective resonant pumps, the interaction dynamics of the upper and the lower laser levels in the Erbium ion reveal the contributions of the non-linear energy transfer mechanisms towards the populations of the levels respectively. This thesis work shows the added accuracy of the rate equation modeling by its inclusion of the measured ESA cross-section and its effect on the population evolution in the Er:YAG system. The model will be tested with measurements made with select Er:YAG crystals being pumped by combinations of resonant infra-red lasers with a chopper spinning at a rate on the order of magnitude of the lower lasing level lifetime.

Conference Presentation

Citation Download Citation

Christian Vega, Ramesh K. Shori, and Oscar Stafsudd "Investigation of non-linear energy transfer dynamics of erbium in yttrium aluminum garnet (Conference Presentation)", Proc. SPIE 10896, Solid State Lasers XXVIII: Technology and Devices, 1089608 (13 March 2019); https://doi.org/10.1117/12.2515255

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