Explain the lasering process on Carbon dioxide laser,
Nd: YAG laser, and HeNe laser in details...
Explain the lasering process on Carbon dioxide laser,
Nd: YAG laser, and HeNe laser in details and show the energy levels
for lasing for example in Co2laser the 9.6 and 10.6-micron laser
lines.
Compare the differences in the manufacture of Nd-YAG and
Nd-glass lasers. Compare their laser power output characteristics
and explain in terms of their construction features.
A Nd: YAG Laser with a length of 0.01m is coated on both sides
so that R=0.95
wavelength= 1.0?m
the linewidth of the laser transition is v = 10/cm
Absorption coefficient a=0.01/cm
Lifetime of upper laser level l = 3ms
refractive index n = 1.77
A. What is the minimum invertsion population requirement for
lasing?
B. What is the Q of the Cavity?
What are the typical output characteristics of Nd-YAG
laser? What are the pumping mechanisms employed in the fabrication
of a Nd-YAG laser? Compare different pumping mechanism in terms of
their advantages and disadvantages.
A carbon-dioxide laser emits infrared light with a wavelength of
10.6 μm. A) What is the length of a tube that will oscillate in the
m = 280000 mode? B) What is the frequency? C)Imagine a pulse of
light bouncing back and forth between the ends of the tube. How
many round trips will the pulse make in each second?