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Digitale Medien

Tunable repetition rate optical spectroscopy with high-power visible diode lasers (1993)

Tatum, J. A. ; MacFarlane, D. L. ; Serreze, H. B.

[S.l.] : American Institute of Physics (AIP)

Review of Scientific Instruments 64 (1993), S. 2123-2127

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ISSN: 1089-7623

Quelle: AIP Digital Archive

Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik

Notizen: The methodology and apparatus are described to perform tunable repetition rate optical spectroscopic measurements using high-power visible diode lasers. Here, a train of picosecond pulses interrogates a material, a sample, or a device under test. The response of the sample or device varies as the pulse repetition frequency changes. Using an rf modulated high-power AlGaInP 670-nm diode laser, the pulse train repetition frequency may be smoothly varied from the kHz range up to the GHz range. The power and the pulse width may be kept constant by adjusting the rf power and the dc injection current. This procedure is automated through computer control. Here we describe the details of our particular setup and present examples of the technique.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1143947

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2

Digitale Medien

Compact, inexpensive, visible diode laser source of high repetition rate picosecond pulses (1992)

Tatum, J. A. ; Jennings, J. W. ; MacFarlane, D. L.

[S.l.] : American Institute of Physics (AIP)

Review of Scientific Instruments 63 (1992), S. 2950-2953

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ISSN: 1089-7623

Quelle: AIP Digital Archive

Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik

Notizen: We discuss the techniques and describe the circuitry to build a visible diode laser picosecond light source. The rf circuitry is easy and inexpensive to build, and the final package is quite compact. Stable, low jitter, 108-Hz trains of ∼100-ps, 670-nm optical pulses are therefore readily attainable.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1142592

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3

Digitale Medien

Beam quality of high-power broad-area visible diode lasers (1994)

Tatum, J. A. ; Staszewski, R. ; Macfarlane, D. L. ; [weitere]

Springer

Optical and quantum electronics 26 (1994), S. 911-928

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ISSN: 1572-817X

Quelle: Springer Online Journal Archives 1860-2000

Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik

Notizen: Abstract We characterize the beam quality of visible-wavelength GRIN-SCH-SQW lasers in terms of geometry and driving current. A second-moment-based, free beam measurement of M 2 yields values ranging from near unity on the plane parallel to the junction, to near 10 in the perpendicular plane. The M 2 values exhibit a dependence on the shape of the L-I characteristic. Higher-order moments are uso quantitatively describe the changes in beam shape as a function of current, and a correlation between the kurtosis and M 2 is observed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00340558

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4

Digitale Medien

Sustained oscillations in GaInP/AlGalnP visible diode lasers (1995)

Tatum, J. A. ; Macfarlane, D. L. ; Serreze, H. B.

Springer

Optical and quantum electronics 27 (1995), S. 101-116

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ISSN: 1572-817X

Quelle: Springer Online Journal Archives 1860-2000

Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik

Notizen: Abstract We report the observation of sustained oscillations and pulsation behaviour in various GaInP/AlGaInP 670 nm diode lasers. We present experimental dependences of the oscillation strength and frequency as functions of diode structure, temperature and drive current. We explore the resonant excitation of this oscillation using both an r.f. current signal and a tunable-repetition-rate picosecond laser source. When a diode laser with a weak internal oscillation is coupled to an external cavity, strong pulsing behaviour is observed, and we attribute this behaviour to self-mode-locking.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00367945

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