COMPARISON BETWEEN ULTRAFAST GAIN AND PHASE DYNAMICS IN SEMICONDUCTOR OPTICAL AMPLIFIERS
2010 ◽
Vol 19
(02)
◽
pp. 319-325
Keyword(s):
The ultrafast dynamics of gain and phase in bulk semiconductor optical amplifiers are numerically investigated over a broad band of about 200 nm based on the semiclassical method of density matrix equations. The gain dynamics and phase dynamics are compared in four different bands for 200 fs Gaussian pump pulse. It is predicted that the recovery time of phase may be longer or shorter than that of gain depending on probe wavelengths. Furthermore, phase recovery overshoot may appear at wavelengths shorter than the pump wavelength. These interesting features result from the competition between spectral-hole burning and carrier heating over the whole band.
2009 ◽
Vol 45
(1)
◽
pp. 21-33
◽
1996 ◽
Vol 07
(01)
◽
pp. 179-222
◽
2021 ◽
Vol 34
(4)
◽
pp. 26-34
Keyword(s):
1997 ◽
Vol 144
(4)
◽
pp. 209-212
◽
Keyword(s):
2001 ◽
Vol 224
(2)
◽
pp. 419-423
◽