skip to main content

SciTech ConnectSciTech Connect

Title: 1.55-μm mode-locked quantum-dot lasers with 300 MHz frequency tuning range

Passive mode-locking of two-section quantum-dot mode-locked lasers grown by metalorganic vapor phase epitaxy on InP is reported. 1250-μm long lasers exhibit a wide tuning range of 300 MHz around the fundamental mode-locking frequency of 33.48 GHz. The frequency tuning is achieved by varying the reverse bias of the saturable absorber from 0 to −2.2 V and the gain section current from 90 to 280 mA. 3 dB optical spectra width of 6–7 nm leads to ex-facet optical pulses with full-width half-maximum down to 3.7 ps. Single-section quantum-dot mode-locked lasers show 0.8 ps broad optical pulses after external fiber-based compression. Injection current tuning from 70 to 300 mA leads to 30 MHz frequency tuning.
Authors:
; ;  [1] ; ; ;  [2]
  1. Institut für Festkörperphysik, Technische Universität Berlin, 10623 Berlin (Germany)
  2. Heinrich-Hertz-Institut, Einsteinufer 37, 10587 Berlin (Germany)
Publication Date:
OSTI Identifier:
22415121
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; GHZ RANGE 01-100; INDIUM PHOSPHIDES; MHZ RANGE 100-1000; MODE LOCKING; PULSES; QUANTUM DOTS; SEMICONDUCTOR LASERS; VAPOR PHASE EPITAXY