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US 12,567,711 B2Granted
Laser device and pulse width-changing method
AssigneeInter-University Research Institute Corporation National Institutes of Natural Sciences
InventorsTakunori Taira, Taisuke Kawasaki, Vincent Yahia
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Abstract
A laser device according to one embodiment includes a laser light source configured to output pulsed laser light L1 and a pulse width control unit configured to amplify the pulsed laser light output from the laser light source, change a pulse width of the pulsed laser light, and output the pulsed laser light. The pulse width control unit includes a first laser amplifier configured to amplify the pulsed laser light and a pulse waveform manipulation unit disposed between the first laser amplifier and the laser light source and configured to manipulate a pulse waveform of the pulsed laser light.
Claims26
A laser device comprising:
- a laser light source configured to output pulsed laser light;
- and
- a pulse width control unit configured to amplify the pulsed laser light output from the laser light source, change a pulse width of the pulsed laser light, and output the pulsed laser light,
- wherein the pulse width control unit includes
- a first laser amplifier configured to amplify the pulsed laser light and
- a pulse waveform manipulation unit disposed between the first laser amplifier and the laser light source and configured to manipulate a pulse waveform of the pulsed laser light, and,
- wherein the pulse waveform manipulation unit includes a second laser amplifier,
- the second laser amplifier includes
- a gain medium and
- a control unit configured to control a supply state of excitation light to the gain medium, and
- the control unit controls the supply state so as to manipulate a waveform of the pulsed laser light.
8 more elements
A laser device comprising:
- a laser light source configured to output pulsed laser light;
- and
- a pulse width control unit configured to amplify the pulsed laser light output from the laser light source, change a pulse width of the pulsed laser light, and output the pulsed laser light,
- wherein the pulse width control unit includes
- a first laser amplifier configured to amplify the pulsed laser light and
- a pulse waveform manipulation unit disposed between the first laser amplifier and the laser light source and configured to manipulate a pulse waveform of the pulsed laser light, and
- wherein the pulse waveform manipulation unit includes a diffraction grating pair.
4 more elements
A laser device comprising:
- a laser light source configured to output pulsed laser light;
- and
- a pulse width control unit configured to amplify the pulsed laser light output from the laser light source, change a pulse width of the pulsed laser light, and output the pulsed laser light,
- wherein the pulse width control unit includes
- a first laser amplifier configured to amplify the pulsed laser light and
- a pulse waveform manipulation unit disposed between the first laser amplifier and the laser light source and configured to manipulate a pulse waveform of the pulsed laser light, and
- wherein the pulse waveform manipulation unit includes a chirped diffraction grating.
4 more elements
A laser device comprising:
- a laser light source configured to output pulsed laser light;
- and
- a pulse width control unit configured to amplify the pulsed laser light output from the laser light source, change a pulse width of the pulsed laser light, and output the pulsed laser light,
- wherein the pulse width control unit includes
- a first laser amplifier configured to amplify the pulsed laser light and
- a pulse waveform manipulation unit disposed between the first laser amplifier and the laser light source and configured to manipulate a pulse waveform of the pulsed laser light, and
- wherein the pulse waveform manipulation unit includes a second laser amplifier, and
- the second laser amplifier includes
- a gain medium,
- a pulse energy adjustment unit configured to change energy of the pulsed laser light input to the gain medium, and
- an excitation energy adjustment unit configured to change energy of excitation light to the gain medium.
8 more elements
A laser device comprising:
- a laser light source configured to output pulsed laser light;
- and
- a pulse width control unit configured to amplify the pulsed laser light output from the laser light source, change a pulse width of the pulsed laser light, and output the pulsed laser light,
- wherein the pulse width control unit includes
- a first laser amplifier configured to amplify the pulsed laser light and
- a pulse waveform manipulation unit disposed between the first laser amplifier and the laser light source and configured to manipulate a pulse waveform of the pulsed laser light, and
- wherein the laser light source outputs multi-mode pulsed laser light, and
- the pulse width control unit includes
- a mode selection unit configured to select one of multi-modes between the laser light source and the pulse waveform manipulation unit.
6 more elements
Dependencies are inferred from the claim text.