Optical strength of semiconductor laser materials

Eliseev, P G

doi:10.1016/0079-6727(95)00002-x

Cited by 51 publications

(29 citation statements)

References 183 publications

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“…The initial stages of the degradation of LDs have been rationalized [8,[41][42][43] in terms of non-radiative recombination, either surface recombination at the facet or at point defects inside the QW. The last decades view a persistent improvement of the laser structures.…”

Section: Discussionmentioning

confidence: 99%

Nanoscale effects on the thermal and mechanical properties of AlGaAs/GaAs quantum well laser diodes: influence on the catastrophic optical damage

Souto¹,

Pura²,

Jiménez³

2017

J. Phys. D: Appl. Phys.

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Section: Discussionmentioning

confidence: 99%

Nanoscale effects on the thermal and mechanical properties of AlGaAs/GaAs quantum well laser diodes: influence on the catastrophic optical damage

Souto¹,

Pura²,

Jiménez³

2017

J. Phys. D: Appl. Phys.

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“…For many applications, output powers of several hundred milliwatts are required, frequently giving rise to power densities at the laser facets ~1-10 MW cm -2 [2]. Such high power densities can result in damage to the facet itself, where strong reabsorption of the emitted radiation causes extreme heating.…”

Section: Introductionmentioning

confidence: 99%

Pressure induced wavelength dependence of catastrophic optical damage in 980 nm semiconductor diode lasers

Lock

Sweeney

Adams

2004

Physica Status Solidi (b)

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Catastrophic Optical Damage (COD) occurs when the facet of high power semiconductor lasers melt due to extreme self-absorption. COD tends to occur in short wavelength lasers but seems to be less of a problem in long wavelength devices. In this paper, we use hydrostatic pressure as a means of changing the wavelength in order to investigate the dependence of COD on emission wavelength. We find that the recorded output power threshold at the onset of COD decreases with increasing pressure (decreasing wavelength). Our measurements further reveal that this threshold is closely correlated with the increase in optical confinement factor with pressure which suggests that the wavelength dependence may largely be attributed to the change in mode size with operating wavelength.

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“…Differences in phonon energies between the two materials systems will also influence the rate at which energy is dissipated. A detailed discussion of such effects can be found in the review paper of Eliseev [21].…”

Section: Catastrophic Optical Damagementioning

confidence: 99%

Direct measurement of facet temperature up to melting point and cod in high-power 980-nm semiconductor diode lasers

Sweeney

Lyons

Adams

et al. 2003

IEEE J. Select. Topics Quantum Electron.

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Abstract-The authors describe a straightforward experimental technique for measuring the facet temperature of a semiconductor laser under high-power operation by analyzing the laser emission itself. By applying this technique to 1-mm-long 980-nm lasers with 6-and 9-m-wide tapers, they measure a large increase in facet temperature under both continuous wave (CW) and pulsed operation. Under CW operation, the facet temperature increases from 25 C at low currents to over 140 C at 500 mA. From pulsed measurements they observe a sharper rise in facet temperature as a function of current ( 400 C at 500 mA) when compared with the CW measurements. This difference is caused by self-heating which limits the output power and hence facet temperature under CW operation. Under pulsed operation the maximum measured facet temperature was in excess of 1000 C for a current of 1000 mA. Above this current, both lasers underwent catastrophic optical damage (COD). These results show a striking increase in facet temperature under high-power operation consistent with the facet melting at COD. This is made possible by measuring the laser under pulsed operation.

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Optical strength of semiconductor laser materials

Cited by 51 publications

References 183 publications

Nanoscale effects on the thermal and mechanical properties of AlGaAs/GaAs quantum well laser diodes: influence on the catastrophic optical damage

Nanoscale effects on the thermal and mechanical properties of AlGaAs/GaAs quantum well laser diodes: influence on the catastrophic optical damage

Pressure induced wavelength dependence of catastrophic optical damage in 980 nm semiconductor diode lasers

Direct measurement of facet temperature up to melting point and cod in high-power 980-nm semiconductor diode lasers

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