A laser impinges on a thin film (12, = 2) sandwiched by two materials (₁<<₂). The top material (2₁) is relatively thick. The laser can take on wavelength A values from 500 [nm] to 2000 [nm]. Within this range, constructive interference occurs only for two wavelength values, 500 [nm] and another wavelength. The respective orders of the wavelengths do not differ by more than one. How thick is the thin film? [Hint: First determine the constraints on the order corresponding to A = 500 [nm].] n₁ nf m OA. 125 [nm] OB. 250 [nm] O C. 375 [nm] OD. 1000 [nm]
A laser impinges on a thin film (12, = 2) sandwiched by two materials (₁<<₂). The top material (2₁) is relatively thick. The laser can take on wavelength A values from 500 [nm] to 2000 [nm]. Within this range, constructive interference occurs only for two wavelength values, 500 [nm] and another wavelength. The respective orders of the wavelengths do not differ by more than one. How thick is the thin film? [Hint: First determine the constraints on the order corresponding to A = 500 [nm].] n₁ nf m OA. 125 [nm] OB. 250 [nm] O C. 375 [nm] OD. 1000 [nm]
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![A laser impinges on a thin film (n = 2) sandwiched by two materials (n₁ <<n< n₂). The top material (₁) is relatively thick. The laser can take on wavelength A values from 500 [nm] to
2000 [nm]. Within this range, constructive interference occurs only for two wavelength values, 500 [nm] and another wavelength. The respective orders of the wavelengths do not differ by more than one. How thick is the
thin film? [Hint: First determine the constraints on the order corresponding to Xo = 500 [nm].]
n₁
nf
O A. 125 [nm]
O B. 250 [nm]
O C. 375 [nm]
O D. 1000 [nm]
12](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F63609da7-c7c1-4c5e-93ce-e53893107bc1%2Fe064d95e-89c3-4b82-bec1-3be2e15301bd%2Fnpsrdei_processed.png&w=3840&q=75)
Transcribed Image Text:A laser impinges on a thin film (n = 2) sandwiched by two materials (n₁ <<n< n₂). The top material (₁) is relatively thick. The laser can take on wavelength A values from 500 [nm] to
2000 [nm]. Within this range, constructive interference occurs only for two wavelength values, 500 [nm] and another wavelength. The respective orders of the wavelengths do not differ by more than one. How thick is the
thin film? [Hint: First determine the constraints on the order corresponding to Xo = 500 [nm].]
n₁
nf
O A. 125 [nm]
O B. 250 [nm]
O C. 375 [nm]
O D. 1000 [nm]
12
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