In semiconductor injection laser, narrow line bandwidth is of the order?a.1 nm or lessb.3 nmc.5 nmd.4 nm

One of the following is not an output of a Nd-YAG laser.a.10060 nmb.1060 nmc.9060 nm

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.a.0.98 nmb.1.2 nmc.0.77 nmd.1.3 nm

The external power efficiency of an injection laser with a GaAs is 13% having band gap energy of 1.64 eV. Determine external power efficiency.a.0.366b.0.198c.0.467d.0.283

The electrical conductivity of a semiconductor increases when a radiation of wavelength shorter than 1000 nm is incident on it. The band gap of the semiconductor is A- 2.4 eV B- 2.2 eV C- 1.2 eV D- 0.8 eV LO

The electrical conductivity of a semiconductor increases when a radiation of wavelength shorter than 1000 nm is incident on it. The band gap of the semiconductor is A- 2.4 eV B- 2.2 eV C- 1.2 eV D- 0.8 eV