Generation of picosecond optical pulses from single heterostructure GaAs diode laser and their emission characteristics

N, V; Shukla, Mayank; Pant, H. C.

doi:10.1007/bf02875178

Cited by 2 publications

(3 citation statements)

References 14 publications

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“…This type of behaviour has been observed earlier in various cw and pulsed semiconductor diode lasers (figure 15B, from Elliot et al 1983), and is known as self-sustained pulsation (Chik et al 1980;Elliot et al 1983;Lau et al 1983;Yariv 1985;MacFarlane & Tatum 1992;Rai et a11995a). These pulses occur at certain frequencies which coincide with the relaxation oscillation frequencies of the diode lasers (Rai et al 1995b). Figure 16 shows the variation of experimentally observed relaxation oscillation where Po is the steady state photon density in the active region, r e is photon life time and A is optical gain coefficient.…”

Section: Study Of Multiple Pulsation In Diode Laser Using Optical Strmentioning

confidence: 68%

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Development of picosecond time resolution optical and X-ray streak cameras

Shukla

Pant

et al. 1995

Sadhana

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We describe the development of an optical and an X-ray streak camera with picosecond time resolution. The entire peripheral electronics and testing systems have been developed indigenously. Both the streak cameras provide ~ 15 ram/1 ns streak rate with a sweep voltage of ~ 1 kV amplitude and rise time of 1 ns. The time and spatial resolution of the optical streak camera have been found to be ~ 17 ps and 100 #m respectively. The sweep pulse generator developed for this purpose provides a step pulse of rise time ~< 1 ns and amplitude ~ 2 kV. The laser diode used for testing the optical streak camera provides multiple pulsation when the pump current is increased beyond a critical threshold.

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Section: Study Of Multiple Pulsation In Diode Laser Using Optical Strmentioning

confidence: 68%

“…Detailed. emission characteristics of these diode lasers are published elsewhere (Rai et al 1995b). This phenomenon of multiple pulsation observed in the laser diode, has been used to test the streak camera (Rai et al 1995a).…”

Section: Study Of Multiple Pulsation In Diode Laser Using Optical Strmentioning

confidence: 99%

Development of picosecond time resolution optical and X-ray streak cameras

Shukla

Pant

et al. 1995

Sadhana

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“…The optical and X-ray streak cameras discussed above have been used in various experiments (Rai et al 1995c(Rai et al , d, 1998Pant et al 1998). Figure 12 shows the time-dependent X-ray intensity profile emitted from laser-produced plasma in the absence and presence of a magnetic field (0.6T).…”

Section: X-ray Emission In Presence Of Magnetic Fieldmentioning

confidence: 99%

High speed plasma diagnostics for laser plasma interaction and fusion studies

Shukla

Pant

et al. 1999

Sadhana

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Laser plasma interaction and fusion studies involve many high speed plasma diagnostics to determine the various parameters for explaining the physical processes taking place in plasma. Detection and analysis of short-term or transient radiations (X-ray and visible) are the bases for diagnosing the physical processes occurring during laser-plasma interaction or similar radiation-emitting processes. This paper reviews the development of various high speed plasma diagnostics which are not only applicable in determining the temporal, spatial and spectral properties of X-rays for this purpose but also have wide use in various other fields of research.

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Generation of picosecond optical pulses from single heterostructure GaAs diode laser and their emission characteristics

Cited by 2 publications

References 14 publications

Development of picosecond time resolution optical and X-ray streak cameras

Development of picosecond time resolution optical and X-ray streak cameras

High speed plasma diagnostics for laser plasma interaction and fusion studies

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