Momentum Laser

February 6, 2010 7:56 pm | Surveying Equipment

Consider a beam of light from a diode laser. The wavelength of the light is = 600 nm, the diameter of the beam?

Consider a beam of light from a diode laser. The wavelength of the light is = 600 nm, the diameter of the beam is 2.00 mm and the power is 0.50W. Answer the following questions;
a. What is the frequency of the light?
b. What is the energy per photon?
c. What is the momentum per photon?
d. What is its wavelength as it passes through glass (n = 1.50)?
e. What is the amplitude of the electric field?
f. What is the amplitude of the magnetic field?

a. What is the frequency of the light?
f = c/λ = 3e8/ 600e-9 = 5.e14 Hz

b. What is the energy per photon?
hf = 6.626e-34*5.e14 = 3.313e-19 J

c. What is the momentum per photon?
hc = 6.626e-34*3e8 = 1.9878e-25 kg m/s
Or
E* λ =3.313e-19*600e-9 = 1.9878e-25 kgm/s

d. What is its wavelength as it passes through glass (n = 1.50)?
λ(glass) = λ(air) / μ = 600e-9/1.5 =400e-9 m

e. What is the amplitude of the electric field?
E= √ (2*energy density/ ξo)

f. What is the amplitude of the magnetic field?
B = √ ( 2*energy density*μo)
======================

Momentum Laser Chalk Line Pro XL Rotary Laser Level
Momentum Laser Chalk Line Pro XL Rotary Laser Level
$69.99 (1 Bid)
Time Remaining: 9h 45m

Laser Chalk Line SL Slide Kit Momentum Laser
Laser Chalk Line SL Slide Kit Momentum Laser
$90.00
Time Remaining: 7d 7h 36m
Buy It Now for only: $90.00

Momentum Laser LS Chalkline Super Pro Pack Layout Kit
Momentum Laser LS Chalkline Super Pro Pack Layout Kit
$159.99
Time Remaining: 8d 17h 50m
Buy It Now for only: $159.99

Momentum Rotary Laser Chalkline Kit Tested Works
Momentum Rotary Laser Chalkline Kit Tested Works
$3.99
Time Remaining: 13d 4h 18m
Buy It Now for only: $3.99

MOMENTUM LASER CHALK LINE XL KIT BRAND NEW
MOMENTUM LASER CHALK LINE XL KIT BRAND NEW
$150.00
Time Remaining: 15d 3h 2m
Buy It Now for only: $150.00

Momentum Laser Chalkline Super Pro Pack Layout Kit
Momentum Laser Chalkline Super Pro Pack Layout Kit
$265.00
Time Remaining: 15d 8h 7m
Buy It Now for only: $265.00

Momentum ROTARY LASER with Case  Accessories
Momentum ROTARY LASER with Case Accessories
$170.00
Time Remaining: 18d 1h 49m
Buy It Now for only: $170.00

Momentum Laser Chalkline Super Pro Pack Layout Kit Complete  Exc Cond
Momentum Laser Chalkline Super Pro Pack Layout Kit Complete Exc Cond
$125.00
Time Remaining: 19d 11h 1m
Buy It Now for only: $125.00

MOMENTUM LASER CHALKLINE DL KIT BRAND NEW
MOMENTUM LASER CHALKLINE DL KIT BRAND NEW
$150.00
Time Remaining: 20d 22h 11m
Buy It Now for only: $150.00

Momentum ROTARY LASER with Case
Momentum ROTARY LASER with Case
$169.00
Time Remaining: 24d 4h 51m
Buy It Now for only: $169.00


Tags: , , , , , , , , ,