, , . , , , .. .
, , . F .
, ,
(1.4)
- ; R1 R2 - ; F - ; D = 1/F - ( , ). , , + - -.
k .
. = 25 D = 10 = 3 . 11, k.
.
F = 1/ D = 1/10 =0,1 ().
. . 1 1 ; . , , F. , , .
(1.4) :
11 ,
11 = ∙ / = 3∙0,16/0,25 = 1,82 ()
k = 11 / = 1,82/3 = 0,66.
I 1 I 2 I
____
I = I 1 + I 2 + 2√ I 1 I 2 s δ, (1.5)
δ - .
, s δ 0, ,.. I I 1 + I 2. , s δ 0, - - I I 1 + I 2.
, : , , . .
L - s n:
|
|
L = s n. (1.6)
Δ = L 2 - L 1 = s 2 n 2 - s 1 n 1. (1.7)
Δ δ
δ
Δ = λ0. (1.8)
2π
λ0 - .
, ..
Δ = 2 m λ0/2 = m λ0, (1.9)
.
Δ = (2 m + 1) λ0/2, (1.10)
.
( ) Δ . ( , , ..)
l
Δ = λ, (1.11)
d
l ; d ; λ - .
_________
Δ = 2 d√ n 2 - sin2 α λ/2 = 2 d n cos β λ/2. (1.12)
d ; α β . λ/2 - , .
( )
(1.13)
( )
(1.14)
R ; m ; n , .
. 1,25, , λ. , d = 10 λ?
. 1, . , . 1 ( 1΄), (1΄΄). 1΄ 1΄΄ , . 1΄ 1΄΄ , .. , . ,
Δ = L 2 - L 1 = 2 d n - (- λ/2) = 2 d n + λ/2. (1.15)
, . : (1.10) , (1.9) .
|
|
2 d n + λ/2 = λ/2, (1.16)
, , - .
(1.16):
2 d n + λ/2 4 d n
= -- = - +1;
λ/2 λ
4∙10∙λ∙1,25
= -- + 1 = 51,
λ
.. , , .
. , . .6 . S - , λ = 589 ; 1 2 l = 10 , n = 1,000277; L1 L2 - ; . N = 17 . .
. . , Δ1 , . Δ1 = m 1λ = 0 , m 1 .
Δ2
Δ2 = n l - n l = m 2λ, (1.17)
m 2 , m 2 = m 1 + N. - N .
n l - n l = m 2λ = (m 1 + N) λ;
m 1 + N
n = n + λ;
l
0 + 17
n = n + 1,000277 + ∙589∙10-9 = 1, 001278.
10-2
.
, . - , . .
(1.18)
(1.19)
b ; m ; λ - .
(1.20)