Novel etching fluids for potassium dihydrogen phosphate

Salmaan Baxamusa; John Adams; Paul Ehrmann; Steven Hawks; Ted Laurence; Marlon Menor; Jemi Ong; Kathleen Schaffers

doi:10.1117/12.2500297

16 November 2018 Novel etching fluids for potassium dihydrogen phosphate

Salmaan Baxamusa, John Adams, Paul Ehrmann, Steven Hawks, Ted Laurence, Marlon Menor, Jemi Ong, Kathleen Schaffers

Proceedings Volume 10805, Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference; 108051G (2018) https://doi.org/10.1117/12.2500297
Event: SPIE Laser Damage, 2018, Boulder, Colorado, United States

Abstract

Absorbing defects such as fractures and contaminants are a leading cause of surface damage in nanosecond pulsed lasers. Etching such defects has proven to be a powerful technique for increasing the laser damage threshold of fused silica, but to date no etching process has been reported for potassium dihydrogen phosphate (KH₂PO₄ or KDP) or its deuterated analog (DKDP). We show that physical dissolution in water is a viable strategy for etching DKDP surfaces but surface-redeposited byproducts can serve as laser damage precursors. We use a water-in-oil microemulsion to etch engineered surface fractures in DKDP. Etching widens surface fractures laterally and decreases their optical activity, as measured by photoluminescence. The removal of 1 μm of the surface of a DKDP crystal increases the laser damage threshold (λ = 355 nm, 7 ns) of the engineered surface fractures by 2-4 J/cm2 (15-30%).

Citation Download Citation

Salmaan Baxamusa, John Adams, Paul Ehrmann, Steven Hawks, Ted Laurence, Marlon Menor, Jemi Ong, and Kathleen Schaffers "Novel etching fluids for potassium dihydrogen phosphate", Proc. SPIE 10805, Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference, 108051G (16 November 2018); https://doi.org/10.1117/12.2500297

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
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Etching

Laser induced damage

Laser damage threshold

Potassium

Luminescence

Crystals

Optical activity

Show All Keywords

Keywords/Phrases

Search In:

Publication Years