Laser capable of simultaneously outputting nanosecond pulses and pico-second pulses

A picosecond pulse and simultaneous output technology, applied in the field of lasers, can solve problems such as unsuitable and not ultrafast lasers, and achieve the effect of improving utilization efficiency and avoiding complex optical paths

Active Publication Date: 2012-10-03
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

However, this kind of laser belongs to electro-optic Q technology, and the obtained pulse widths are nanoseconds and microseconds r

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  • Laser capable of simultaneously outputting nanosecond pulses and pico-second pulses
  • Laser capable of simultaneously outputting nanosecond pulses and pico-second pulses
  • Laser capable of simultaneously outputting nanosecond pulses and pico-second pulses

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0024] The technical idea of ​​the laser that simultaneously outputs nanosecond and picosecond pulses provided by the present invention is: in the picosecond regenerative amplifier laser, the electro-optical control technology combining the extra-cavity Pockels cell and the intra-cavity Pockels cell is used to realize effective The regenerative amplification process under the condition of signal light is introduced to obtain high-energy picosecond laser output; and the cavity emptying process under the condition of no signal light is introduced to obtain the output of nanosecond pulse, and finally through the pulse and delay of two Pockels cells. Time adjustment control can realize the free combination of the two processes...

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Abstract

The invention discloses a laser capable of simultaneously outputting nanosecond pulses and pico-second pulses. The laser comprises a signal source, a signal isolation system and an amplifier. According to the invention, with an electric light control technology of combining an extra-cavity Pockels cell and intra-cavity Pockels cell, a regenerative amplification process is realized in case of signal light importing so as to obtain high-energy pico-second laser output, and cavity empty process is also realized in case of no signal light importing so as to obtain nanosecond pulse output; and thefree combination of the two processes can be realized according to practical application demand, and as a result, free combination of numbers of the nanosecond pulses and the pico-second pulses in a single laser is realized and is output in an alternative way. The laser provided by the invention has an important application in high-precision high-efficiency fine processing field, as well as basicresearch fields such as plasma excitation, excited state control, chemical reaction control, special radiation excitation and the like.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a laser that simultaneously outputs nanosecond and picosecond pulses. Background technique [0002] Laser beams composed of nanosecond and picosecond pulses have important applications in the field of high-precision material processing. This laser can simultaneously combine the advantages of picosecond and nanosecond pulses to complete the material processing process. The heat-affected zone of picosecond laser processing is small, and the pulse width is less than 10 ps. The etching and ablation effect of the laser directly sublimating the material is dominant, and the "cold processing" effect without obvious heat-affected zone will be obtained. It belongs to the category of cold processing laser, but the etching efficiency is relatively low Low, greatly increasing the processing time; nanosecond pulses can achieve high-efficiency processing, but due to the wide pulse width, severe...

Claims

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Application Information

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IPC IPC(8): H01S3/10H01S3/115
Inventor 于海娟林学春张玲孙伟鄢歆杨盈莹韩泽华曲研晏诗恋侯玮李晋闽
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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