Adhesive-free bond (AFB) CVD diamond/sapphire and CVD diamond/YAG crystal composites

H. Lee; H. E. Meissner; O. R. Meissner

doi:10.1117/12.665794

12 May 2006 Adhesive-free bond (AFB) CVD diamond/sapphire and CVD diamond/YAG crystal composites

H. Lee, H. E. Meissner, O. R. Meissner

Proceedings Volume 6216, Laser Source and System Technology for Defense and Security II; 62160O (2006) https://doi.org/10.1117/12.665794
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

We report on adhesive-free bonded (AFB"R") CVD diamond surfaces of 2 to 3 nm rms roughness to sapphire, YAG and optically coated YAG surfaces to form robust and stress free composite components. Considering the high thermal conductivity of CVD diamond with respect to YAG or sapphire, AFB"R" diamond/sapphire and diamond /YAG composites can be ideal components for thermal management of high power solid-state laser systems of certain design configurations. We ascribe the attractive bonding forces at the interface between diamond and sapphire and other single crystals such as YAG and spinel largely to Van der Waals forces. Contrary to chemical bonds, Van der Waals forces consist of non-localized dipole-dipole interactions that manifest their long range effects by allowing relative movement between two bonded surfaces of different coefficients of thermal expansion, thus avoiding local stress during thermal cycling. CVD diamond surfaces result in a much wider compatibility range for forming stress-free or low-stress composites compared to alumina compound single crystal counterparts. Feasibility of forming AFB"R" stress- free interfaces between diamond and optically coated oxide surfaces marks an important step in widening the range of AFB"R" for solid state laser and electronic applications.

Citation Download Citation

H. Lee, H. E. Meissner, and O. R. Meissner "Adhesive-free bond (AFB) CVD diamond/sapphire and CVD diamond/YAG crystal composites", Proc. SPIE 6216, Laser Source and System Technology for Defense and Security II, 62160O (12 May 2006); https://doi.org/10.1117/12.665794

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