We demonstrate high-performance broadband tunable external-cavity lasers(ECLs) with the metal-organic chemical vapor deposition(MOCVD) grown In As/In P quantum dots(QDs) structures. Without cavity facet coatings, the ...We demonstrate high-performance broadband tunable external-cavity lasers(ECLs) with the metal-organic chemical vapor deposition(MOCVD) grown In As/In P quantum dots(QDs) structures. Without cavity facet coatings, the 3-d B spectral bandwidth of the Fabry–Perot(FP) laser is approximately 10.8 nm, while the tuning bandwidth of ECLs is 45 nm.Combined with the anti-reflection(AR)/high-reflection(HR) facet coating, a 92 nm bandwidth tuning range has been obtained with the wavelength covering from 1414 nm to 1506 nm. In most of the tuning range, the threshold current density is lower than 1.5 k A/cm2. The maximum output power of 6.5 m W was achieved under a 500 m A injection current.All achievements mentioned above were obtained under continuous-wave(CW) mode at room temperature(RT).展开更多
We report on the measurement of junction temperature of the InAs/InP（l00） quantum dot lasers working in the 1.55μm wavelength region. The measurement is based on analyzing the temperature induced mode shift of the ...We report on the measurement of junction temperature of the InAs/InP（l00） quantum dot lasers working in the 1.55μm wavelength region. The measurement is based on analyzing the temperature induced mode shift of the Fabry-Perot cavity. Under pulsed operation mode, more than 20℃ junction temperature rise is measured for the quantum-dot （QD） laser when the duty cycle is increased from 1% to 95%. For a reference quantum well laser, the junction temperature rise is obtained as only around 3℃. The large junction temperature rise might be a crucial factor to improve the performance of QD lasers.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.61974141)Tianjin Municipal Science and Technology BureauScience and Technology Innovation Bureau of China-Singapore Tianjin Eco-City。
文摘We demonstrate high-performance broadband tunable external-cavity lasers(ECLs) with the metal-organic chemical vapor deposition(MOCVD) grown In As/In P quantum dots(QDs) structures. Without cavity facet coatings, the 3-d B spectral bandwidth of the Fabry–Perot(FP) laser is approximately 10.8 nm, while the tuning bandwidth of ECLs is 45 nm.Combined with the anti-reflection(AR)/high-reflection(HR) facet coating, a 92 nm bandwidth tuning range has been obtained with the wavelength covering from 1414 nm to 1506 nm. In most of the tuning range, the threshold current density is lower than 1.5 k A/cm2. The maximum output power of 6.5 m W was achieved under a 500 m A injection current.All achievements mentioned above were obtained under continuous-wave(CW) mode at room temperature(RT).
基金Supported by the National Natural Foundation of China under Grant Nos 61204058 and 61021064the Natural Foundation of Guangdong Province under Grant No S2013010011833the Foundation of Shenzhen Innovation Program under Grant No JCYJ20130401095559823
文摘We report on the measurement of junction temperature of the InAs/InP（l00） quantum dot lasers working in the 1.55μm wavelength region. The measurement is based on analyzing the temperature induced mode shift of the Fabry-Perot cavity. Under pulsed operation mode, more than 20℃ junction temperature rise is measured for the quantum-dot （QD） laser when the duty cycle is increased from 1% to 95%. For a reference quantum well laser, the junction temperature rise is obtained as only around 3℃. The large junction temperature rise might be a crucial factor to improve the performance of QD lasers.
