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Title: Active/passive mode-locked laser oscillator

Abstract

A Q-switched/mode-locked Nd:YAG laser oscillator employing simultaneous active (electro-optic) and passive (saturable absorber) loss modulation within the optical cavity is described. This "dual modulation" oscillator can produce transform-limited pulses of duration ranging from about 30 psec to about 5 nsec with greatly improved stability compared to other mode-locked systems. The pulses produced by this system lack intrapulse frequency or amplitude modulation, and hence are idealy suited for amplification to high energies and for other applications where well-defined pulses are required. Also, the pulses of this system have excellent interpulse characteristics, wherein the optical noise between the individual pulses of the pulse train has a power level well below the power of the peak pulse of the train.

Inventors:
 [1];  [2]
  1. Fremont, CA
  2. Palo Alto, CA
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
862816
Patent Number(s):
US 4019156
Assignee:
United States of America as represented by United States Energy (Washington, DC)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
active; passive; mode-locked; laser; oscillator; q-switched; yag; employing; simultaneous; electro-optic; saturable; absorber; loss; modulation; optical; cavity; described; dual; produce; transform-limited; pulses; duration; ranging; 30; psec; nsec; greatly; improved; stability; compared; systems; produced; lack; intrapulse; frequency; amplitude; hence; idealy; suited; amplification; energies; applications; well-defined; required; excellent; interpulse; characteristics; noise; individual; pulse; train; power; level; below; peak; pulses produced; yag laser; pulse train; laser oscillator; power level; optical cavity; amplitude modulation; improved stability; pulse frequency; greatly improved; saturable absorber; pulse characteristics; peak pulse; passive mode; /372/

Citation Formats

Fountain, William D, and Johnson, Bertram C. Active/passive mode-locked laser oscillator. United States: N. p., 1977. Web.
Fountain, William D, & Johnson, Bertram C. Active/passive mode-locked laser oscillator. United States.
Fountain, William D, and Johnson, Bertram C. Sat . "Active/passive mode-locked laser oscillator". United States. https://www.osti.gov/servlets/purl/862816.
@article{osti_862816,
title = {Active/passive mode-locked laser oscillator},
author = {Fountain, William D and Johnson, Bertram C},
abstractNote = {A Q-switched/mode-locked Nd:YAG laser oscillator employing simultaneous active (electro-optic) and passive (saturable absorber) loss modulation within the optical cavity is described. This "dual modulation" oscillator can produce transform-limited pulses of duration ranging from about 30 psec to about 5 nsec with greatly improved stability compared to other mode-locked systems. The pulses produced by this system lack intrapulse frequency or amplitude modulation, and hence are idealy suited for amplification to high energies and for other applications where well-defined pulses are required. Also, the pulses of this system have excellent interpulse characteristics, wherein the optical noise between the individual pulses of the pulse train has a power level well below the power of the peak pulse of the train.},
doi = {},
url = {https://www.osti.gov/biblio/862816}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

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