Question

Calculate the useful loss in a laser cavity of length 60 cm, whose mirrors have reflectivity 99.9% and 98.5% respectively.

Answer #1

. The loop gain of a 0.5 m length laser, GL, is 1.04, and loss
factor is M=0.98. What is the minimum reflectivity of a symmetric
(same reflectivity for both mirrors) resonator mirror if the laser
gain coefficient is 2*10-3 cm-1?

For a cavity with gain 110 cm-1 and loss 35
cm-1 calculate the required length of the cavity to
reach threshold, assuming total mirror loss of 0.4.
What is the restriction on the phase constant?

Suppose a confocal cavity of a He-Ne laser (l =632.8 nm) with
length 30 cm. Calculate the following:
a. the minimum beam diameter in the
cavity.
b. the beam diameter at each
mirror.
c. the angular divergence.

Calculate the energy loss of 60 MeV proton in: - 1 mm water. - 2
cm water. - 4 cm water

An object with 5 cm height is placed 60 cm from a diverging
lense whose focal length is 15 cm. Find the location of the image,
size and kind of image (real or virtual image, upright or inverted)
using the calculation method. Explain using a step by step
solution, including formula.

A converging lens with a focal length of 60 cm and a diverging
lens with a focal length of -70 cm are 310 cm apart. A 2.7-cm-tall
object is 80 cm in front of the converging lens.
Calculate the distance between the final image and the diverging
lens.
Express your answer to two significant figures and include the
appropriate units.
Calculate the image height.
Express your answer to two significant figures and include the
appropriate units.

An object is placed 10 cm in front of a concave mirror whose
focal length is 15 cm. The object is 2.8 cm tall. Determine (a) the
location of the image, taking a real image as a positive value and
a virtual image as a negative value. (b) Determine the height of
the image, where an upright image will have a positive height and
an inverted image will have a negative height.

A grey body is one whose absorptivity
1. does not vary with temperature and wavelength of the incident
ray
2. is equal to its emissivity
3. varies with temperature
4. varies with wavelength of the incident ray
A liquid is in equilibrium with its vapor at its boiling point.
On an average, the molecules in the liquid and gaseous phases have
equal
1. potential energy.
2. kinetic energy.
3.temperature. 4. intermolecular forces of attraction.
A liquid of density 1000 kg/m3...

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