Patent
Low cost, high average power, high brightness solid state laser
TLDR
In this article, a seed laser beam with a short pulse duration was used to produce a high average power, high brightness solid state laser system, where a laser amplifier (24) amplifies the seed beam to produce an amplified pulse laser beam which is tightly focused to produce pulses with brightness levels in excess of 1011 Watts/cm2.Abstract:
A high average power, high brightness solid state laser system. We first produce a seed laser beam with a short pulse duration. A laser amplifier (24) amplifies the seed beam to produce an amplified pulse laser beam which is tightly focused to produce pulses with brightness levels in excess of 1011 Watts/cm2. Preferred embodiments produce an amplified pulse laser beam having an average power in the range of 1 kW, an average pulse frequency of 12,000 pulses per second with pulses having brightness levels in excess of 1014 Watts/cm2 at a 20 micrometers diameter spot which may be steered rapidly to simulate a larger spot size. Alternately, a kHz system with several (for example, seven) beams (from amplifiers arranged in parallel) can each be focused to 20 micrometers and clustered to create effective spot sizes of 100 to 200 micrometers. These beams are useful in producing X-ray sources for lithography.read more
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Patent
Energy efficient, laser-based method and system for processing target material
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TL;DR: In this article, a method and system for locally processing a predetermined microstructure formed on a substrate without causing undesirable changes in electrical or physical characteristics of the substrate or other structures formed on the substrate are provided.
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Automated polarization correction
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References
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PatentDOI
Synchronously pumped dye laser using ultrashort pump pulses
James D. Kafka,Thomas M. Baer +1 more
TL;DR: In this paper, the output of a continuous wave modelocked Nd:YAG laser is first pulse compressed and then frequency doubled from infrared to green, to provide a new pumping source for a synchronously pumped dye laser.
Patent
Energy scalable laser amplifier
Richard L. Abrams,Hans W. Bruesselbach,Concetto R. Guiliano,Richard C. Lind,Monica L. Minden,T. R. O’Meara,David A. Rockwell,Ronald R. Stephens +7 more
TL;DR: In this paper, a laser apparatus (10) has a coherent master oscillator radiation source (30) for driving a plurality of laser gain elements (20) positioned in a operationally parallel configuration so as receive unamplified radiation (40) from master oscilltor (30), and transmitting amplified radiation (44).
Patent
Method of and apparatus for modulating a laser beam
TL;DR: In this paper, a laser system operating in both a lead bonding mode and a lead severing mode was presented, where the Q-switch was switched at a rate high enough to generate laser pulses suitable for severing the leads without heating adjacent portions of the leads.
Patent
AMPLIFICATION OF ULTRASHORT PULSES WITH Nd:GLASS AMPLIFIERS PUMPED BY ALEXANDRITE FREE RUNNING LASER
TL;DR: In this paper, a system for producing ultra-high peak power pulses employs a plurality of solid state amplifying materials, such as Nd:glass, alexandrite, and Ti:sapphire, to achieve stretching of a pulse prior to amplification by a factor of approximately between 100 and 10,000.
Patent
Laser system for controlling emitted pulse energy
John Hunter,Sunil Gupta +1 more
TL;DR: In this article, a laser system controlling laser pulse energy by feedback to the laser Q-switch was described. But the system was not shown to be able to adjust the output pulse energy to substantially equal an energy setpoint.