Thermal modeling of GaAs-based semiconductor disk lasers

Zhang, Peng; Song, Yan Rong; Men, Yan Bin; Dai, Te Li; Yi, Lin; Fan, Si Qiang

doi:10.1016/j.ijleo.2011.06.007

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…Effects of the substrate thickness, heat spreading, and pump conditions on the thermal properties of lasers were simulated and results showed that a thin substrate and a heat spreader significantly enhance heat dissipation. 16 More detailed heat dissipation in electrically pumped metallic–dielectric nanolasers with Al 2 O 3 and SiO 2 dielectric shields were compared, showing better performance for the Al 2 O 3 dielectric shield with high thermal conductivity. 17 More recently, thermal effects of InP/InAs nanowire lasers integrated on different optical platforms were studied and results revealed that decreasing the thermal resistance between the nanowires and substrates is the most efficient way for cw nanowire laser operation.…”

Section: Introductionmentioning

confidence: 99%

“…Various types of metal-clad microcavity lasers have been demonstrated ranging from pulsed optically pumped to continuous wave (cw) electrically pumped. − Although it is expected that a metallic cavity will improve heat dissipation in nanocavity lasers, so far there has been no systematic study on the thermal analysis of dielectric and metallic micro- and nanocavity lasers. Effects of the substrate thickness, heat spreading, and pump conditions on the thermal properties of lasers were simulated and results showed that a thin substrate and a heat spreader significantly enhance heat dissipation . More detailed heat dissipation in electrically pumped metallic–dielectric nanolasers with Al 2 O 3 and SiO 2 dielectric shields were compared, showing better performance for the Al 2 O 3 dielectric shield with high thermal conductivity .…”

Section: Introductionmentioning

confidence: 99%

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Thermal Simulation and Experimental Analysis of Optically Pumped InP-on-Si Micro- and Nanocavity Lasers

et al. 2022

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There is a general trend of downscaling laser cavities, but with high integration and energy densities of nanocavity lasers, significant thermal issues affect their operation. The complexity of geometrical parameters and the various materials involved hinder the extraction of clear design guidelines and operation strategies. Here, we present a systematic thermal analysis of InP-on-Si micro- and nanocavity lasers based on steady-state and transient thermal simulations and experimental analysis. In particular, we investigate the use of metal cavities for improving the thermal properties of InP-on-Si micro- and nanocavity lasers. Heating of lasers is studied by using Raman thermometry and the results agree well with simulation results, both revealing a temperature reduction of hundreds of kelvins for the metal-clad cavity. Transient simulations are carried out to improve our understanding of the dynamic temperature variation under pulsed and continuous wave pumping conditions. The results show that the presence of a metal cladding not only increases the overall efficiency in heat dissipation but also causes a much faster temperature response. Together with optical experimental results under pulsed pumping, we conclude that a pulse width of 10 ns and a repetition rate of 100 kHz is the optimal pumping condition for a 2 μm wide square cavity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal Simulation and Experimental Analysis of Optically Pumped InP-on-Si Micro- and Nanocavity Lasers

et al. 2022

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Modelling of thermal effects in InP-on-Si nanocavity lasers

Wen

Tiwari

Gotsmann

et al. 2021

2021 IEEE 17th International Conference on Group IV Photonics (GFP)

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High-power 970 nm semiconductor disk laser

Zhang,

Xiao,

Wang

et al. 2023

Opt. Express

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Semiconductor disk lasers (SDLs) have emerged at the frontier of laser technologies. Here, the chip design, packaging process, resonator, pumping strategy, etc. are optimized for the performance improvement of a 970 nm SDL. After optimization, a power of 70.3 W is attained under continuous wave (CW) operation, and the corresponding thermal resistance is around 0.49 K/W. The laser is highly efficient with a maximum slope efficiency of 58.2% and the pump threshold is only around 1.83 kW/cm2. Furthermore, the emission performances under quasi-continuous wave (QCW) pumping are also explored. Setting the duty cycle to about 11%, the chips can output a peak power of 138 W without thermal rollover, and the single pulse energy can reach about 13.6 mJ. As far as we know, they are the best results in terms of power/energy in this wavelength SDL. These explorations may help to understand the thermal characteristics in high-power SDLs and may also be regarded as an extension and enrichment of the earlier works on this topic.

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Thermal modeling of GaAs-based semiconductor disk lasers

Cited by 3 publications

References 27 publications

Thermal Simulation and Experimental Analysis of Optically Pumped InP-on-Si Micro- and Nanocavity Lasers

Thermal Simulation and Experimental Analysis of Optically Pumped InP-on-Si Micro- and Nanocavity Lasers

Modelling of thermal effects in InP-on-Si nanocavity lasers

High-power 970 nm semiconductor disk laser

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