Question
In: Physics
A scanning Fabry-Perot etalon to be used in studying mode structure of a He-Ne laser with...
A scanning Fabry-Perot etalon to be used in studying mode structure of a He-Ne laser with the following characteristics: llaser = 110 cm, spacing between longitudinal modes is 1.7x109 Hz, and the full width half maximum is 1.7x107 Hz. What will be the length, finesse, and mirror reflectivity of the resonator? Assume that both mirrors have same reflectivity.
Solutions
genius_generous answered 2 years agoRelated Solutions
A Fabry–Perot laser diode has an internal loss coefficient is 40dB.cm-1 , longitudinal mode spacing is...
A Fabry–Perot laser diode has an internal loss coefficient is
40dB.cm-1 , longitudinal mode spacing is 88GHz and mirror
reflectivity, R1 = R2 = 0.5. Compute the length of the cavity and
the photon lifetime. Also, compute the minimum required gain to
sustain laser oscillations. Assume that the velocity of light in
the active region is 9.09 × 107 m/s.
4.22 mode-locked laser (a)consider a He-Ne laser emitting at 632.8nm, and mode-locked. the tube length is...
4.22 mode-locked laser (a)consider a He-Ne laser emitting at
632.8nm, and mode-locked. the tube length is 50cm. the spectral
with of the optical gain curve is 1.5 GHz Find the mode-locked
pulse width and the repetition rate. what is the seperation of
pulses in space? (b) consider a Nd^3+ glass laser that is
mode-locked. The emission wavelength is 1060 nm and the spectral
width of the optical gain curve is 7THz. the refractive index of
the laser medium is 1.45....
Consider a Fabry–Perot semiconductor laser diode operating at 1550 nm. The active region is a III–V...
Consider a Fabry–Perot semiconductor laser diode operating at
1550 nm. The active region is a III–V quaternary semiconductor
alloy of InGaAsP (but quite close to being InGaAs). The LD has a
cavity length of 250 μm. The refractive index of InGaAsP is
approximately 3.60 and dn/dT = 2.5 * 10^-4 K^-1, the linear thermal
expansion coefficient is 5.6 * 10^-6 K^-1. The bandgap of InGaAs
follows the Varshi equation Eg = Ego - AT^2>(B + T) with Ego =
0.850...
Summarize the conditions of Laser operation and explain shortly the essentials of He-Ne laser operation.
Summarize the conditions of Laser operation and explain shortly
the essentials of He-Ne laser operation.
1) Summarize the conditions of Laser operation and explain shortly the essentials of He-Ne laser operation....
1) Summarize the conditions of Laser operation and explain
shortly the essentials of He-Ne laser
operation.
2) A laser diode has dielectric constant of ε = 4εo and has a
cavity length 1-mm long
with one perfect mirror and one mirror with a power reflection
coefficient of 0.99. It
operates at wavelength of 1-micron with linewidth of 0.1 percent
associated with the
width of the energy levels involved. (a) What is the frequency
spacing (Hz) between
resonances for this laser...
In a He-Ne laser system the starting intensity is 0.1 picowatts with a gain coefficient of...
In a He-Ne laser system the starting intensity is 0.1 picowatts
with a gain coefficient of 0.1 (1/cm). If R1 = .98 and R2 = .99,
with a cavity length of 50 cm, what is the intensity of the beam
inside AND outside the cavity after five round trips? Assume the
starting beam is from the second mirror R2, and that there is no
saturation mechanism involved.
In a He-Ne laser system the starting intensity is 0.1 picowatts with a gain coefficient of...
In a He-Ne laser system the starting intensity is 0.1 picowatts
with a gain coefficient of 0.1 (1/cm). If R1 = .98 and R2 = .99,
with a cavity length of 50 cm, what is the intensity of the beam
inside AND outside the cavity after five round trips? Assume the
starting beam is from the second mirror R2, and that there is no
saturation mechanism involved.
Two thin slits separated by 0.0880 mm are illuminated by light from a He-Ne laser (?...
Two thin slits separated by 0.0880 mm are illuminated by light
from a He-Ne laser (? = 633 nm), producing interference
fringes on a distant screen. Find the angle between the centers of
the central bright fringe and the next bright fringe.
A small He-Ne laser produces a 632.8 nm beam with an average power of 3.5 mW...
A small He-Ne laser produces a 632.8 nm beam with an average
power of 3.5 mW and diameter of 2.4mm
a) How many photons per second are emitted by the laser?
b) What is the amplitude of the electric field inside the beam?
(Hint: You should consult your EP book, the internet, or equation
3.10 for this problem)
c) How does this electric field compare with one produced by a 100W
light bulb at a distance of 1 meter?
Light from a He-Ne laser (wavelength 633nm) passes through a single slit of width 25μm. At...
Light from a He-Ne laser (wavelength 633nm) passes through a
single slit of width 25μm. At the screen a distance away, the
intensity at the center of the central maxima is 8.25 W/m^2.
a. Draw a clear diagram showing the slit and the intensity
pattern seen on the screen. Label key quantities and key
features.
b. Find the maximum number of totally dark fringes (minima) seen
on the screen.
c. At what angle does the dark fringe (minima) that is...
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