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Stabilization of pulsed mode seed lasers

A pulsed laser, pulsed technology, applied in the field of stabilization of pulsed mode seed lasers

Inactive Publication Date: 2014-01-01
ELECTRO SCI IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tailoring the DAC speed and number of segments required for pulse output makes DAC implementations challenging to design

Method used

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  • Stabilization of pulsed mode seed lasers
  • Stabilization of pulsed mode seed lasers
  • Stabilization of pulsed mode seed lasers

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Embodiment Construction

[0025] see figure 2 , in a first preferred embodiment, a programmable tailor-made laser pulse generator 10 includes a pulsed pump seed diode laser 12 to generate a pulsed seed laser output 14 with The laser pulse intensity profile generated by the tailor-made drive current pulse input signal 16 is synthesized by a device 18 . The line width and line stability of the pulsed seed laser output 14 are important factors for laser processing applications such as link breaking of memory chips, but are also important characteristics for solid state laser amplifiers to produce stable amplification. The seed diode laser 12 with stable lines and narrow linewidth provides a laser spot size small enough to achieve the focused laser treatment required. An example of a preferred seed diode laser 12 is a 1064 nm single-mode spectrally stabilized laser model No. I1064SB0120P available from Innovative Photonic Solutions, Inc. (Monmouth Junction, NJ). This laser is specially designed to seed ...

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Abstract

A programmable tailored laser pulse generator including a pulsed seed laser source, a laser amplifier, and an optical power amplifier produces high power tailored laser pulses shaped in response to a programmable analog tailored pulse signal applied to a seed laser (first embodiment) or an external modulator of continuous-wave seed laser output (second embodiment). The programmable analog tailored pulse signal is generated by combining multiple individually programmable analog pulses generated by a multi-channel signal generator. A bias applied to the pulsed seed laser source generates pre-lasing prior to producing a tailored laser pulse so that the seed laser source spectral line and line width stabilize within a narrow gain line width of a solid-state laser amplifier, thereby to impart pulse peak stability of the laser output. The tailored laser pulse generator allows for generating harmonics at shorter wavelengths and provides an economical, reliable laser source for a variety of micromachining applications.

Description

[0001] Copyright Notice [0002] 2012 Electro Scientific Industries, Inc. The disclosed portion of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the reproduction of either the patent document or the patent disclosure as it appears in the Patent and Trademark Office patent file or records, and otherwise reserves all copyright rights whatsoever. 37 CFR §1.71(d). technical field [0003] The present disclosure relates to generating tailor-made laser pulses for use in laser micromachining applications, and in particular, to methods and systems using a high-efficiency programmable tailor-made laser pulse generator, the high-efficiency programmable A tailored laser pulse generator emits tailored laser pulses generated by a seed laser and amplified by a fiber laser and a solid-state power amplifier in response to programmable electrical signal pulses. Background technique [0004] Memory chip redundant l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10H01S5/068
CPCB23K26/063H01S3/1673H01S3/0085H01S3/0092H01S3/06754H01S3/2316H01S3/1618B23K26/0084B23K26/385H01S3/2375H01S5/06216H01S5/0428H01S3/10015H01S3/0064B23K26/0622H01S5/0622H01S5/0654B23K26/389B23K26/355H01S3/10H01S3/13H01S5/068
Inventor 卢福原常峰吴海胜孙云龙
Owner ELECTRO SCI IND INC
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