An MQW cascaded laser is more advantageous because of:

Related MCQs

• An injection laser has active cavity losses of 25 cm-1and the reflectivity of each laser facet is 30%. Determine the laser gain coefficient for the cavity it has a length of 500μm.
• The thulium doped fiber laser when pumped with alexandrite laser output at 0.786 μm, the laser emits at
• The Nd: YAG laser is costlier than earth-doped glass fiber laser. State whether the following statement is true or false
• A _____________ coupler comprises a number of cascaded stages, each incorporating three or four-port FBT couplers to obtain a multiport output.
• The beat length in a single mode optical fiber is 8 cm, when light from a laser with a peak wavelength 0.6μm is launched into it. Estimate the modal birefringence.
• The optical source used in a fiber is an injection laser with a relative spectral width σλ/λ of 0.0011 at a wavelength of 0.70μm. Estimate the RMS spectral width.
• _________ semiconductor laser sources generally have broader bandwidths.
• Which process gives the laser its special properties as an optical source?
• __________________ in the laser occurs when photon colliding with an excited atom causes the stimulated emission of a second photon.
• A ruby laser has a crystal of length 3 cm with a refractive index of 1.60, wavelength 0.43 μm. Determine the number of longitudinal modes.