Tampere University of Technology

TUTCRIS Research Portal

High Peak Power Laser Diodes for Eye Safe LIDAR with Integrated Wavelength Locking Element

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Details

Original languageEnglish
Title of host publication2019 Conference on Lasers and Electro-Optics Europe European Quantum Electronics Conference (CLEO/Europe-EQEC)
PublisherIEEE
ISBN (Electronic)978-1-7281-0469-0
ISBN (Print)978-1-7281-0470-6
DOIs
Publication statusPublished - 17 Oct 2019
Publication typeA4 Article in a conference publication
EventConference on Lasers and Electro-Optics Europe European Quantum Electronics Conference -
Duration: 1 Jan 2000 → …

Conference

ConferenceConference on Lasers and Electro-Optics Europe European Quantum Electronics Conference
Abbreviated titleCLEO/Europe-EQEC
Period1/01/00 → …

Abstract

We report on the development of high peak-power broad-area laser diodes emitting in the 1.5 pm wavelength band for eye-safe LIDAR applications. The laser contain a monolithically integrated surface grating section for wavelength stabilization. The performance merits of the wavelength stabilized laser is benchmark against traditional Fabry-Pérot diodes fabricated within the same processing batch and having identical quantum-well design. The study demonstrates the efficacy of the surface-grating applied to broad-area lasers and the benefits rendered possible for decreasing the spectral linewidth and reducing the temperature drift of the wavelength. This type of high-power light source can improve the signal-to-noise ratio of eye-safe time-of-flight LIDARs in bright illumination conditions by making possible the use of narrow band-pass filters for reducing the ambient sunlight. Moreover, the same advantage to reject ambient signal is expected in other applications such as gated imaging [1], or when using a pulsed laser as the illuminator in high speed imaging applications. In addition, the variation in the emission wavelengths from wafer-to-wafer and from chip-to-chip is reduced compared to non-stabilized lasers.

Keywords

  • Surface emitting lasers, Distributed Bragg reflectors, Gratings, Diode lasers, Laser stability

Publication forum classification

Field of science, Statistics Finland