… reduce the linewidth of a semiconductor laser without changing its cavity structure.
Calculations and experiments were carried out to reduce the linewidth of a 1.5 Fm InGaAsP laser (…

… linewidth reduction due to optical feedback from an external cavity by Patzak et al. [15]. Later
a relation to the reduction … We consider edge-emitting semiconductor lasers as sketched in …

… linewidths of the order of a few megahertz, with an α parameter in the range of 3–5 [2–4].
Efforts to reduce the linewidth of semiconductor lasers … designs of external cavity lasers [5,6] …

… semiconductor lasers can be traced back to the nonzero value of this parameter. This paper
gives an overview of semiconductor laser … measurements of linewidth reduction in InGaAsP …

… in GaAIAs semiconductor lasers. II In conclusion, we have confirmed that the laser linewidth
of an external cavity laser is inversely proportional to the square of the cavity length at …

… linewidth is … linewidth of a single-mode semiconductor laser is reduced when using our
method from 6.4 MHz to 6.5 kHz. This result confirms that the spectral linewidth can be reduced …

… Via our experiment, we explore the limits of a simple semiconductor laser rate equation
model, including time-delayed feedback [14]. It predicts that a laser coupled to an external mirror …

… 1 shows an experimental apparatus for linewidth reduction and center frequency stabilization.
The laser was fixed on a heat sink composed of a copper block and a Peltier element. The …

… This is because FM noise is reduced only in the low-… in the slave laser, the FM noise
reduction factor decreases with … for FM noise and linewidth reduction in semiconductor lasers. A …

… A discussion on the linewidth reduction is given in Section V. … We start from rate equations
of the th passively locked mode for semiconductor lasers including the small-signal expression …