Title :
High-energy (59 pJ) and low-jitter (250 fs) picosecond pulses from gain-switching of a tapered-stripe laser diode via resonant driving
Author :
Chang, C.T. ; Sun, C.K. ; Albares, D.J. ; Jacobs, E.W.
Author_Institution :
Dept. of Electr. Eng., San Diego State Univ., CA, USA
Abstract :
High-energy (59 pJ), low-jitter (250 fs), high-extinction ratio (800), and short (14.5 ps FWHM) pulses were generated by gain-switching of a tapered stripe gain-guided laser diode (LD) via resonant driving. These characteristics are attributed to a stable single-mode near-field pattern, a single-lobe far-field pattern, and multilongitudinal modes associated with the tapered stripe LD under high driving current pulses. These pulses from a comb generator were enhanced mainly from reflection at the LD-transmission line impedance mismatch; the line length was adjusted for resonance with the reflection from the step recovery diode, further increasing the driving current.
Keywords :
high-speed optical techniques; jitter; laser modes; laser stability; semiconductor lasers; 14.5 ps; 250 fs; 59 pJ; LD-transmission line impedance mismatch; comb generator; gain-switching; high-energy; high-extinction ratio; line length; low-jitter; multilongitudinal modes; picosecond pulses; resonant driving; single-lobe far-field pattern; stable single-mode near-field pattern; step recovery diode; tapered-stripe laser diode; Diode lasers; Impedance; Jacobian matrices; Optical pulse generation; Optical pulses; Optical reflection; Pulse generation; Pulse measurements; Resonance; Sun;
Journal_Title :
Photonics Technology Letters, IEEE
