Damage threshold studies of magnesium fluoride thin films deposited over polyacrilonitrile

P. Radhakrishnan; K. Sathianandan

doi:10.1364/AO.25.001027

Applied Optics
Vol. 25,
Issue 7,
pp. 1027-1028
(1986)
•https://doi.org/10.1364/AO.25.001027

Damage threshold studies of magnesium fluoride thin films deposited over polyacrilonitrile

P. Radhakrishnan and K. Sathianandan

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P. Radhakrishnan and K. Sathianandan, "Damage threshold studies of magnesium fluoride thin films deposited over polyacrilonitrile," Appl. Opt. 25, 1027-1028 (1986)

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No.	Characteristics	Samples of polyacrylonitrile

		I	II	III
1	Thickness (nm)	105	200	370
2	Absorptance at 1060 nm (%)	4	3	3
3	Damage threshold (at normal incidence) (J/cm²)	10.7 ±0.84	14.71 ± 1.30	26.0 ± 2.08
4	Damaged site area at 56° (mm²)	0.5513	0.3891	0.3717
5	Input laser energy (mJ)	33 ± 1.5	32 ± 1.5	54 ± 1.0

No.	Sample film	Thickness (nm)	Input laser energy	Threshold (J/cm²) at normal incidence	Damaged site area at 56° mm²
1	Magnesium fluoride	273	35 ± 1.0	37.0 ± 4.14	0.1690
2	Magnesium fluoride	530 ± 5	30 ± 1.5	11.75 ± 0.91	0.4726
3	Magnesium fluoride	1060 ± 5	30 ± 2.0	8.95 ± 0.69	0.5995
3	Magnesium fluoride + polyacrylonitrile I	(530 ± 5) + 105	31 ± 1.5	8.84 ± 0.66	0.6273
5	Magnesium fluoride + polyacrylonitrile III	(530 ± 5) + 370	37 ± 1.0	17.20 ± 1.45	0.3846

No.	Characteristics	Samples of polyacrylonitrile

		I	II	III
1	Thickness (nm)	105	200	370
2	Absorptance at 1060 nm (%)	4	3	3
3	Damage threshold (at normal incidence) (J/cm²)	10.7 ±0.84	14.71 ± 1.30	26.0 ± 2.08
4	Damaged site area at 56° (mm²)	0.5513	0.3891	0.3717
5	Input laser energy (mJ)	33 ± 1.5	32 ± 1.5	54 ± 1.0

No.	Sample film	Thickness (nm)	Input laser energy	Threshold (J/cm²) at normal incidence	Damaged site area at 56° mm²
1	Magnesium fluoride	273	35 ± 1.0	37.0 ± 4.14	0.1690
2	Magnesium fluoride	530 ± 5	30 ± 1.5	11.75 ± 0.91	0.4726
3	Magnesium fluoride	1060 ± 5	30 ± 2.0	8.95 ± 0.69	0.5995
3	Magnesium fluoride + polyacrylonitrile I	(530 ± 5) + 105	31 ± 1.5	8.84 ± 0.66	0.6273
5	Magnesium fluoride + polyacrylonitrile III	(530 ± 5) + 370	37 ± 1.0	17.20 ± 1.45	0.3846

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Applied Optics