Development and analysis of diode laser ns-MOPA systems for high peak power application

Thi Nghiem Vu

ISBN 10: 373699480X / ISBN 13: 9783736994805

Published by Cuvillier, 2017

About this Item

Development and analysis of diode laser ns-MOPA systems for high peak power application | Thi Nghiem Vu | Taschenbuch | Innovationen mit Mikrowellen und Licht. Forschungsberichte aus dem Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik 41 | 138 S. | Englisch | 2017 | Cuvillier | EAN 9783736994805 | Verantwortliche Person für die EU: Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen, info[at]cuvillier[dot]de | Anbieter: preigu Print on Demand.

Seller Inventory # 108523955

Bibliographic Details

• Title: Development and analysis of diode laser ns-MOPA systems for high peak power application
• Publisher: Cuvillier
• Publication Date: 2017
• Language: English
• ISBN 10: 373699480X
• ISBN 13: 9783736994805
• Binding: Taschenbuch
• Condition: Neu
• Dimensions: 210W x 148H x 8D millimeters 210 millimeters width by 148 millimeters height by 8 millimeters depth
• Weight: 189 grams
• Seller catalogs:
  • Bücher

About this title

Synopsis

This work aims at designing and characterizing diode laser based master oscillator power amplifier (MOPA) systems, which are targeted to be implemented into micro light detection and ranging (LIDAR) or differential absorption LIDAR (DIAL) systems for water vapor and aerosol detections. These light sources operate in the ns-pulse regime at a repetition rate of 25 kHz, leading to a resolution in the meter range in an altitude of 6 km. The monolithic MOPA, where Master Oscillator (MO) and Power Amplifier (PA) are integrated on one single chip, operates at 1064 nm wavelength. A peak power of 16.3 W with a pulse width of 3 ns was obtained. A spectral linewidth of about 150 pm and a side mode suppression ratio (SMSR) of 30 dB was observed. A ratio of 9% between the amplified spontaneous emission (ASE) and the laser was estimated. These spectral properties fulfill the requirements for aerosol detection. The hybrid MOPA systems have separate chips for MO and PA. Different hybrid MOPA systems provide a stabilized wavelength at 1064 nm, a tunable wavelength around 975 nm and a dual wavelength around 964 nm. They therefore enable to detect a well-defined absorption line, scan over absorption line and switch between on/off line in DIAL applications, respectively. Their spectral linewidth is below 10 pm, limited by the resolution of the spectrum analyzer. An SMSR of more than 50 dB for the MO and of more than 37 dB for the whole MOPA was reached. A ratio between ASE and laser below 1% was estimated. These spectral properties meet the requirements for water vapor absorption lines detection at atmospheric condition. Diode laser based MOPA systems were therefore proven to be potential light sources for micro-pulse-LIDAR systems - the basis for a new generation of ultra-compact, low-cost systems.