Systems and methods for inhibiting contamination enhanced laser induced damage (CELID) based on fluorinated self-assembled monolayers disposed on optics
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G02B-001/00
G02B-027/00
출원번호
US-0802042
(2013-03-13)
등록번호
US-9323051
(2016-04-26)
발명자
/ 주소
Weiller, Bruce H.
Fowler, Jesse D.
Villahermosa, Randy M.
출원인 / 주소
The Aerospace Corporation
대리인 / 주소
Jones Day
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
Embodiments of the present invention provide systems and methods for inhibiting contamination enhanced laser induced damage (CELID) based on fluorinated self-assembled monolayers (F-SAMs) disposed on optics. For example, a coating for inhibiting CELID to an optic disposed in a sealed gas environment
Embodiments of the present invention provide systems and methods for inhibiting contamination enhanced laser induced damage (CELID) based on fluorinated self-assembled monolayers (F-SAMs) disposed on optics. For example, a coating for inhibiting CELID to an optic disposed in a sealed gas environment or vacuum may include an F-SAM that includes a fluorinated hydrocarbon tail group covalently bound to the optic by a head group. The coating may be formed by heating the optic and a liquid-phase precursor of the F-SAM to generate a gas-phase precursor, and exposing the heated optic to the gas-phase precursor for a period of time sufficient for the gas-phase precursor to coalesce at and covalently bond to the optic and form the F-SAM. The optic may include silica, and the F-SAM may include a siloxane group covalently bound to the silica.
대표청구항▼
1. A coating for inhibiting contamination enhanced laser induced damage (CELID) to an optic disposed in a sealed gas environment or vacuum, the coating comprising a fluorinated self-assembled monolayer (F-SAM) including a fluorinated hydrocarbon tail group covalently bound to the optic via a head gr
1. A coating for inhibiting contamination enhanced laser induced damage (CELID) to an optic disposed in a sealed gas environment or vacuum, the coating comprising a fluorinated self-assembled monolayer (F-SAM) including a fluorinated hydrocarbon tail group covalently bound to the optic via a head group, the coating inhibiting CELID to the optic. 2. The coating of claim 1, wherein the coating is formed by heating the optic and a liquid-phase precursor of the F-SAM to generate a gas-phase precursor, and exposing the heated optic to the gas-phase precursor for a period of time sufficient for the gas-phase precursor to coalesce at and covalently bond to the optic and form the F-SAM. 3. The coating of claim 1, having a contact angle with water of about 100 degrees or greater and a contact angle with toluene of about 50 degrees or greater. 4. The coating of claim 1, wherein the optic comprises silica, and wherein the head group comprises a siloxane group covalently bound to the silica. 5. The coating of claim 1, wherein the tail group has the general structure: CF3—(CF2)n—(CH2)q—,where n is zero or an integer, andq is an integer. 6. The coating of claim 5, wherein n is between zero and twenty, q is an integer less than twenty, and n+q is twenty or less. 7. The coating of claim 6, wherein n is between five and ten, and q is between two and four. 8. A system with enhanced resistance to contamination enhanced laser induced damage (CELID), the system comprising: a housing defining a sealed gas environment or vacuum;a laser defining an optical path through the sealed gas environment or vacuum;an optic disposed within the housing and in the optical path of the laser; anda coating disposed on the optic, the coating comprising a fluorinated self-assembled monolayer (F-SAM) including a fluorinated hydrocarbon tail group covalently bound to the optic by a head group, the coating inhibiting CELID to the optic. 9. The system of claim 8, wherein the coating is formed by heating the optic and a liquid-phase precursor of the F-SAM to generate a gas-phase precursor, and exposing the heated optic to the gas-phase precursor for a period of time sufficient for the gas-phase precursor to coalesce at and covalently bond to the optic and form the F-SAM. 10. The system of claim 8, wherein the coating has a contact angle with water of about 100 degrees or greater and a contact angle with toluene of about 50 degrees or greater. 11. The system of claim 8, wherein the optic comprises silica, and wherein the head group comprises a siloxane group covalently bound to the silica. 12. The system of claim 8, wherein the fluorinated hydrocarbon tail group has the general structure: CF3—(CF2)n—(CH2)q—,where n is zero or an integer, andq is an integer. 13. The system of claim 12, wherein n is between zero and twenty, q is an integer less than twenty, and n+q is twenty or less. 14. The system of claim 13, wherein n is between five and ten, and q is between two and four. 15. The system of claim 8, further comprising a container configured to introduce a gas phase additive to the sealed gas environment or vacuum in an amount sufficient to further inhibit CELID to the optic. 16. The system of claim 15, wherein the gas phase additive comprises water or an alcohol. 17. A method for inhibiting contamination enhanced laser induced damage (CELID) to an optic, the method comprising: disposing on the optic a coating comprising a fluorinated self-assembled monolayer (F-SAM) including a fluorinated hydrocarbon tail group covalently bound to the optic via a head group;disposing the optic with the coating disposed thereon within a housing defining a sealed gas environment or vacuum and along an optical path of a laser; andtransmitting light from the laser through or reflecting light from the laser from the optic with the coating disposed thereon substantially without CELID. 18. The method of claim 17, wherein the coating is disposed on the optic by heating the optic and a liquid-phase precursor of the F-SAM to generate a gas-phase precursor, and exposing the heated optic to the gas-phase precursor for a period of time sufficient for the gas-phase precursor to coalesce at and covalently bond to the optic and form the F-SAM. 19. The method of claim 18, wherein the liquid-phase precursor has the general structure: CF3—(CF2)n—(CH2)q—SiXpY3-p,where n is zero or an integer,q is an integer,X is an alkoxy group,Y is a halogen, andp is zero or an integer between one and three. 20. The method of claim 19 wherein n is between zero and twenty, q is an integer less than twenty, and n+q is twenty or less. 21. The method of claim 20, wherein n is between five and ten, q is between two and four, Y is Cl, and p is zero. 22. The method of claim 17, wherein the coating has a contact angle with water of about 100 degrees or greater and a contact angle with toluene of about 50 degrees or greater. 23. The method of claim 17, wherein the optic comprises silica, and wherein the head group comprises a siloxane group covalently bound to the silica. 24. The method of claim 17, further comprising introducing a gas phase additive to the sealed gas environment or vacuum in an amount sufficient to further inhibit CELID to the optic. 25. The method of claim 24, wherein the gas phase additive comprises water or an alcohol. 26. The coating of claim 1, wherein the head group comprises a thiolate or a phosphonate. 27. The system of claim 8, wherein the head group comprises a thiolate or a phosphonate. 28. The method of claim 17, wherein the head group comprises a thiolate or a phosphonate.
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