Laser diode based new generation lidars

John A Reagan, H. Liu, J. F. McCalmont

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

Recent technological advances in lasers and detectors now permit realization of relatively low cost and eye-safe lidars. Eye safety, even in the visible and near-IR regions, can be achieved by reducing laser pulse energies to a few micro-joules. The reduced signals due to such low transmitted pulse energies can be at least partially offset by operating at higher pulse repetition frequencies (PRF's). Laser diodes as lidar transmitter sources offer advantages of low cost, several available wavelengths and high PRF's, but they have also suffered from limitations of very low pulse energies, spectrally broad pulsed operation and wide beam divergence. However, the development of master oscillator-power amplifier (MOPA) laser diode configurations now offers the possibility of single-mode pulsed operation at microjoule and higher energy levels with reduced beam divergence. High efficiency photon counting avalanche photodiodes (APD's) have also become available which are capable of counting at high rates (approx.20 MHz), thus permitting effective detection of micro-pulse lidar (MPL) signals. This paper addresses the design requirements of laser diode lidars, based on these technological innovations, to achieve effective aerosol and DIAL water vapor sensing.

Original languageEnglish (US)
Title of host publicationInternational Geoscience and Remote Sensing Symposium (IGARSS)
PublisherIEEE
Pages1535-1537
Number of pages3
Volume3
StatePublished - 1996
EventProceedings of the 1996 International Geoscience and Remote Sensing Symposium. Part 3 (of 4) - Lincoln, NE, USA
Duration: May 28 1996May 31 1996

Other

OtherProceedings of the 1996 International Geoscience and Remote Sensing Symposium. Part 3 (of 4)
CityLincoln, NE, USA
Period5/28/965/31/96

Fingerprint

Semiconductor lasers
laser
Optical radar
Avalanche photodiodes
lidar
energy
Power amplifiers
Water vapor
Electron energy levels
divergence
Aerosols
Costs
Transmitters
Laser pulses
Photons
Innovation
Detectors
avalanche
Wavelength
cost

ASJC Scopus subject areas

  • Software
  • Geology

Cite this

Reagan, J. A., Liu, H., & McCalmont, J. F. (1996). Laser diode based new generation lidars. In International Geoscience and Remote Sensing Symposium (IGARSS) (Vol. 3, pp. 1535-1537). IEEE.

Laser diode based new generation lidars. / Reagan, John A; Liu, H.; McCalmont, J. F.

International Geoscience and Remote Sensing Symposium (IGARSS). Vol. 3 IEEE, 1996. p. 1535-1537.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Reagan, JA, Liu, H & McCalmont, JF 1996, Laser diode based new generation lidars. in International Geoscience and Remote Sensing Symposium (IGARSS). vol. 3, IEEE, pp. 1535-1537, Proceedings of the 1996 International Geoscience and Remote Sensing Symposium. Part 3 (of 4), Lincoln, NE, USA, 5/28/96.
Reagan JA, Liu H, McCalmont JF. Laser diode based new generation lidars. In International Geoscience and Remote Sensing Symposium (IGARSS). Vol. 3. IEEE. 1996. p. 1535-1537
Reagan, John A ; Liu, H. ; McCalmont, J. F. / Laser diode based new generation lidars. International Geoscience and Remote Sensing Symposium (IGARSS). Vol. 3 IEEE, 1996. pp. 1535-1537
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