Selective-absorption cross section of CF3CHCl2 and CF3CDCl2 at 10.2 and 10.6 μm of a TEA CO2 laser

S. L. Chin; G. Boisclair

doi:10.1364/OL.4.000340

Optics Letters
Vol. 4,
Issue 10,
pp. 340-341
(1979)
•https://doi.org/10.1364/OL.4.000340

Selective-absorption cross section of CF₃CHCl₂ and CF₃CDCl₂ at 10.2 and 10.6 μm of a TEA CO₂ laser

S. L. Chin and G. Boisclair

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S. L. Chin and G. Boisclair, "Selective-absorption cross section of CF₃CHCl₂ and CF₃CDCl₂ at 10.2 and 10.6 μm of a TEA CO₂ laser," Opt. Lett. 4, 340-341 (1979)

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Abstract

A selective absorption cross section of 100:1 was measured for Freon 123-d and natural Freon 123 at the 10.2- and 10.6-μm lines of a TEA CO₂ laser. Multiple-photon absorption occurs at low fluence (0.1 J/cm²) at 10.2 μm but not at 10.6 μm.

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54% Deuterated FC123 Total Pressure (Torr)	CF₃CDCl₂ Partial Pressure (Torr)	Absorption Cross Section $\bar{σ}$ (× 10⁻¹⁹ cm²)	Standard Deviation (%)	λ Laser (μm)
0.101	0.054	2.53	4.2	10.6
0.200	0.108	2.71	2.6	10.6
0.300	0.162	2.89	1.9	10.6
0.400	0.216	3.08	1.7	10.6
0.500	0.270	3.25	1.6	10.6
0.606	0.327	3.32	1.4	10.6
0.700	0.378	3.45	1.3	10.6
0.801	0.432	3.57	1.4	10.6
0.901	0.486	3.66	1.3	10.6
1.120	0.605	3.88	1.3	10.6
0.102	0.055	4.23	5.9	10.2
0.202	0.109	3.33	3.8	10.2
0.304	0.164	3.11	3.0	10.2
0.400	0.216	2.98	2.6	10.2
0.505	0.273	3.01	2.3	10.2
0.601	0.325	3.04	2.0	10.2
0.791	0.427	3.11	1.7	10.2
0.905	0.489	3.14	1.6	10.2.
1.002	0.541	3.15	1.6	10.2
1.121	0.605	3.22	1.4	10.2

Natural FC123 (Torr)	Absorption Cross Section σ (×10⁻²¹ cm²)	Standard Deviation (%)	Laser Wavelength (μm)
2.00	3;36	7.8	10.6
2.76	3.85	5.1	10.6
4.01	3.70	3.7	10.6
5.00	3.70	2.8	10.6
7.00	3.98	1.8	10.6
7.36	3.98	1.9	10.6
2.00	5.35	12.0	10.2
2.99	4.88	7.8	10.2
5.00	4.48	5.1	10.2
7.00	4.57	3.5	10.2

54% Deuterated FC123 Total Pressure (Torr)	CF₃CDCl₂ Partial Pressure (Torr)	Absorption Cross Section $\bar{σ}$ (× 10⁻¹⁹ cm²)	Standard Deviation (%)	λ Laser (μm)
0.101	0.054	2.53	4.2	10.6
0.200	0.108	2.71	2.6	10.6
0.300	0.162	2.89	1.9	10.6
0.400	0.216	3.08	1.7	10.6
0.500	0.270	3.25	1.6	10.6
0.606	0.327	3.32	1.4	10.6
0.700	0.378	3.45	1.3	10.6
0.801	0.432	3.57	1.4	10.6
0.901	0.486	3.66	1.3	10.6
1.120	0.605	3.88	1.3	10.6
0.102	0.055	4.23	5.9	10.2
0.202	0.109	3.33	3.8	10.2
0.304	0.164	3.11	3.0	10.2
0.400	0.216	2.98	2.6	10.2
0.505	0.273	3.01	2.3	10.2
0.601	0.325	3.04	2.0	10.2
0.791	0.427	3.11	1.7	10.2
0.905	0.489	3.14	1.6	10.2.
1.002	0.541	3.15	1.6	10.2
1.121	0.605	3.22	1.4	10.2

Natural FC123 (Torr)	Absorption Cross Section σ (×10⁻²¹ cm²)	Standard Deviation (%)	Laser Wavelength (μm)
2.00	3;36	7.8	10.6
2.76	3.85	5.1	10.6
4.01	3.70	3.7	10.6
5.00	3.70	2.8	10.6
7.00	3.98	1.8	10.6
7.36	3.98	1.9	10.6
2.00	5.35	12.0	10.2
2.99	4.88	7.8	10.2
5.00	4.48	5.1	10.2
7.00	4.57	3.5	10.2

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Optics Letters