supported by the National Natural Science Foundation of China(Grant Nos.62034008,6207414262074140,61974162,61904172,61874175);the Youth Innovation Promotion Association of Chinese Academy of Sciences(Grant No.2019115);Beijing Nova Program(Grant No202093);Beijing Municipal Science and Technology Project(Grant No.Z211100007921022);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No XDB43030101)。
Ultraviolet(UV)and deep-UV light emitters are prom-ising for various applications including bioagent detection,wa-ter and air purification,dermatology,high-density optical stor-age,and lithography.However,to achieve s...
This paper presents the design and testing of a 15 Gbps non-return-to-zero(NRZ),30 Gbps 4-level pulse amplitude modulation(PAM4)configurable laser diode driver(LDD)implemented in 0.15-μm GaAs E-mode pHEMT technology....
The effects of the quantum well(QW)width,carrier density,and aluminium(Al)concentration in the barrier layers on the optical characteristics of a gallium nitride(GaN)-based QW laser diode are investigated by means of ...
supported by the National Key R&D Program of China(No.2016YFB0402105);the Key Deployment Program of the Chinese Academy of Sciences(No.KGZD-SW-T01-2);the National Natural Science Foundation of China(No.61404135)
We represent a design of a 20 W, fiber-coupled diode laser module based on 26 single emitters at 520 nm. The module can produce more than 20 W output power from a standard fiber with core diameter of 400 Hm and numeri...
The paper mainly deals with theoretical investigations of the effect of the thickness change of the wave- guide layers on the threshold current. It is analyzed according to the result of a numerical simulation that as...
Project supported by the National Natural Science Foundation of China(No.11474036);the National Key Lab of High Power Semiconductor Lasers Foundations(No.9140C310103120C3101)
The second-order Bragg grating structure of an 808 nm distributed feedback semiconductor laser diode was designed and optimized. The grating with a period of 240 nm was fabricated on GaAs substrate by holographic phot...
The correlation model between dark current RTS noise and defects for A1GalnP multiple-quantum-well laser diode is derived. Experimental results show that dark current RTS noise caused carrier number fluctuations at th...
supported by the National High Technology Research and Development Program of China(No.2007AA01Z2a5)
A 1.25 Gb/s laser diode driver(LDD) with pulse width optimization has been implemented in a 0.6-μm BiCMOS process.This paper illustrates the relation between the pulse width distortion(PWD) of the output eye diag...
Project supported by the National High Technology Research and Development Program of China(No.2007AA01Z2a5).
A fast automatic power control(APC) circuit for a laser diode driver(LDD) has been implemented in a 0.6-μm BiCMOS process.The APC circuit adopts double-loops and variable-bandwidth techniques to achieve a turn- o...
Project supported by the National High Technology Research and Development Program of China(Nos.2006AA01Z256, 2007AA03Z419,2007AA03Z417);the State Key Development Program for Basic Research of China(Nos.2006CB604901, 2006CB604902);the National Natural Science Foundation of China(Nos.90401025,60736036,60706009,60777021).
A frequency and wavelength tunable self-pulsation laser based on DBR laser devices is reported for the first time.This laser generates continuous tunable optical microwave in the range of 1.87-21.81 GHz with 3-dB line...