Laser device and method for generating laser light
AssigneeHamamatsu Photonics K.K.
InventorsTakashi Kurita, Yoshinori Kato, Toshiyuki Kawashima
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Abstract
A laser apparatus includes a light source unit and a light combining unit. The light source unit outputs first laser light and second laser light having a wavelength different from that of the first laser light to different optical paths. The light combining unit is optically coupled to the light source unit, and combines the first laser light and the second laser light to generate a burst pulse with a frequency according to a difference between the wavelength of the first laser light and the wavelength of the second laser light. In the light source unit, the wavelengths of the first laser light and the second laser light are set in advance or settable such that the frequency of the burst pulse is 1 GHz or more.
Claims11
A laser apparatus comprising:
- a light source unit configured to output first laser light and second laser light having a wavelength different from that of the first laser light to different optical paths;
- a light combining unit optically coupled to the light source unit, and configured to combine the first laser light and the second laser light to generate a burst pulse with a frequency according to a difference between the wavelength of the first laser light and the wavelength of the second laser light and with a range defined by an envelope;
- and
- a waveform control unit configured to control waveforms of the first laser light and the second laser light before the combining to be waveforms identical to each other to control a shape of the envelope of the burst pulse, wherein
- in the light source unit, the wavelengths of the first laser light and the second laser light are set in advance or settable such that the frequency of the burst pulse is a certain frequency, and
- the certain frequency is 1 GHz or more.
A laser light generation method comprising:
- outputting first laser light and second laser light having a wavelength different from that of the first laser light to different optical paths;
- and
- combining the first laser light and the second laser light to generate a burst pulse with a frequency according to a difference between the wavelength of the first laser light and the wavelength of the second laser light and with a range defined by an envelope, wherein
- in the outputting, the wavelengths of the first laser light and the second laser light are set such that the frequency of the burst pulse is 1 GHz or more, and
- waveforms of the first laser light and the second laser light before the combining are controlled to be waveforms identical to each other to control a shape of the envelope of the burst pulse.
Dependencies are inferred from the claim text.