The thermal properties of AlGaAs/GaAs laser diode bars analyzed by the transient thermal technique

Qiao, Yanbin; Feng, Shiwei; Cong, Xin; Ma, Xiaoyu; Zhu, Hongtu; Guo, Chunsheng; Wei, Guanghua

doi:10.1016/j.sse.2012.07.007

Cited by 22 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the thermal characteristic of 808nm laser array was studied, and it was pointed out that there was transverse thermal crosstalk between the luminescent elements [14] . The pulsed operation introduced thermal stress to the array bars, and it was pointed out that thermal stress cyclic fatigue is one of the main failure modes of high-power semiconductor laser arrays under high-power pulsed operating conditions [15] .…”

Section: Introductionmentioning

confidence: 99%

Research on failure mechanism of high-power tapered semiconductor laser

Liao,

Chen,

Liu

et al. 2023

AOPC 2023: Laser Technology and Applications; And Optoelectronic Devices and Integration

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Research on failure mechanism of high-power tapered semiconductor laser

Liao,

Chen,

Liu

et al. 2023

AOPC 2023: Laser Technology and Applications; And Optoelectronic Devices and Integration

View full text Add to dashboard Cite

“…[15]. First of all, the LD is operated under a constant electrical power of 2 W for 600 s which was chosen to be enough long to a steady-state operation regime, then the LD was switched from the working state to measuring state to measure the forward voltage using an A/D data acquisition board under a sensor current (1.5 mA).…”

mentioning

confidence: 99%

Transient thermal characteristics related to catastrophic optical damage in high power AlGaAs/GaAs laser diodes

Qiao

Feng

Cong

et al. 2013

Phys. Status Solidi A

Self Cite

View full text Add to dashboard Cite

The transient thermal characteristics related to catastrophic optical damage (COD) in high power AlGaAs/GaAs laser diodes (LDs) are studied experimentally by means of thermal infrared imaging, laser scanning confocal microscopy, and transient thermal technique. The transient thermal technique is based on the diode forward voltage method in which the structure function theory is applied to determine the component thermal resistance and temperature rise of the LDs. We have recorded the dynamics of COD process using thermal infrared camera. Two melting spots are observed in the output facet after COD which location exactly matches the position of the thermal flash from the thermal imaging and even the temperature of COD seed has a sudden increase of 32 K when the COD event occurs. Furthermore, we find that the thermal resistance from chip to In solder increases remarkably after COD, meanwhile the thermal resistance of solder and package does not change apparently. The results are attributed to the heat power dissipation increase originating from the enhancement of nonradiative recombination after COD under constant input electrical power.

show abstract

Effect of Transient and Steady-State Current on the Photothermal Performance of a UVC-LED

Wang

Zou

Yang

et al. 2021

J. Electron. Mater.

View full text Add to dashboard Cite

A UVC-LED is a deep ultraviolet LED with a wavelength of 200-280 nm, which has a wide range of applications in disinfection, water purification and other fields. However, UVC-LED chips have limitations of high heat and poor heat dissipation, so it is necessary to test and analyze the thermal and optical properties of UVC-LEDs. This paper studies the photothermal characteristics of a UVC-LED under different driving currents. By measuring and analyzing the radiation flux, radiation intensity, junction temperature and thermal resistance of the UVC-LED under different driving currents, it is found that the junction temperature of the UVC-LED under the transient and steady state increases with the increase in the driving current, while the thermal resistance decreases. The radiation flux and intensity of the UVC-LED increase with the increase in driving current. The peak wavelength appears as a redshift with the increase in current, and the half-wave width also increases with the increase in current.

show abstract

The thermal properties of AlGaAs/GaAs laser diode bars analyzed by the transient thermal technique

Cited by 22 publications

References 16 publications

Research on failure mechanism of high-power tapered semiconductor laser

Research on failure mechanism of high-power tapered semiconductor laser

Transient thermal characteristics related to catastrophic optical damage in high power AlGaAs/GaAs laser diodes

Effect of Transient and Steady-State Current on the Photothermal Performance of a UVC-LED

Contact Info

Product

Resources

About