Pulse stretcher and compressor including a multi-pass Bragg grating
AssigneeRaydiance, Inc.
InventorsKyungbum Kim, Laurent Vaissié, Robert G. Waarts, Andrew Stadler, Michael J. Cumbo
Life of this patent
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Abstract
A chirped pulse amplification (CPA) system and method is described wherein the pulse is stretched using multiple passes through a Bragg grating or compressed using multiple passes through a Bragg grating. A switch may be used to control the number of passes through the Bragg grating, thus, tuning the compressed or the stretched pulse width. The pulse may be directed through an amplifier between the multiple passes through the Bragg grating to apply amplification to the stretched pulse multiple times. The Bragg grating may include a fiber Bragg grating, a volume Bragg grating, or a Bragg waveguide.
Claims23
A laser system comprising:
- a source configured to emit a pulse;
- a Bragg grating configured to receive the pulse and compress the pulse to generate a compressed pulse, the Bragg grating including a volume Bragg grating having cross-sectional dimensions in a ratio greater than 5:1;
- and
- beam steering optics configured to direct the compressed pulse into the Bragg grating one or more times to further compress the compressed pulse.
A laser system comprising:
- a source configured to emit a pulse;
- a Bragg grating configured to receive the pulse and stretch the pulse to generate a stretched pulse, the Bragg grating including a volume Bragg grating having cross-sectional dimensions in a ratio greater than 5:1;
- and
- beam steering optics configured to direct the stretched pulse into the Bragg grating one or more times to further stretch the stretched pulse.
A system comprising:
- a volume Bragg grating configured to receive a laser pulse, the volume Bragg grating having cross-sectional dimensions in a ratio greater than 5:1;
- and
- beam steering optics configured to
- direct the laser pulse into the volume Bragg grating two or more times, each of the two or more times being to compress the laser pulse, or
- direct the laser pulse into the volume Bragg grating two or more times, each of the two or more times being to stretch the laser pulse.
A method comprising:
- receiving a pulse in a Bragg grating, the Bragg grating including a volume Bragg grating having cross-sectional dimensions in a ratio greater than 5:1;
- compressing the pulse using the Bragg grating to generate a compressed pulse;
- directing the compressed pulse into the Bragg grating;
- and
- further compressing the compressed pulse one or more times using the Bragg grating to generate a multiply compressed pulse.
A method comprising:
- receiving a pulse in a Bragg grating, the Bragg grating including a volume Bragg grating having cross-sectional dimensions in a ratio greater than 5:1;
- stretching the pulse using the Bragg grating to generate a stretched pulse;
- directing the stretched pulse into the Bragg grating;
- and
- further stretching the stretched pulse one or more times using the Bragg grating to generate a multiply stretched pulse.
A method comprising:
- receiving a pulse in a first Bragg grating;
- stretching the pulse using the first Bragg grating two or more times to generate a multiply stretched pulse;
- amplifying the multiply stretched pulse to generate an amplified pulse;
- and
- compressing the amplified pulse two or more times using a second Bragg grating, at least one of the first Bragg grating or the second Bragg grating including a volume Bragg grating having cross-sectional dimensions in a ratio greater than 5:1.
Dependencies are inferred from the claim text.