Optical parametric ultrashort pulse amplifier

Patent metadata

Field	Value
Publication number	US-10133150-B2
Application number	US-201515115575-A
Country	US
Kind code	B2
Filing date	Jan 30, 2015
Priority date	Jan 31, 2014
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

An optical parametric amplification device, including: an emitter emitting non-monochromatic light pulses as a pump wave; a stretcher configured to receive as an input pump wave, and to output a stretched pump wave; and a waveguide configured to receive as an input the stretched pump wave and chirped pulses, and to provide a wave resulting from a four wave mixing.

First claim

The invention claimed is:

1. A system, comprising:
an emitting means, configured to emit non-monochromatic light pulses, named a pump wave, and to further emit light pulses, named an input signal wave;
a means for shaping a wave comprising a first stretcher, configured to receive as an input the pump wave, and to output a stretched pump wave;
a second stretcher, configured to receive as an input the input signal wave, and to output chirped pulses, named a stretched signal wave, the second stretcher being different than the first stretcher;
a waveguide configured to receive as an input the stretched signal wave and the stretched pump wave, and to provide an output signal, named an output signal wave, resulting from a four wave mixing; and
a compressor configured to temporally compress the output signal wave,
wherein the waveguide, the emitting means, and the means for shaping together form an optical parametric chirped pulse amplification device.

2. The system according to claim 1 , wherein the emitting means is configured to emit a pump wave having a spectral width higher than or equal to one nanometer.

3. The system according to claim 1 , wherein a ratio of a chirp of the stretched signal wave to a chirp of the stretched pump wave is defined, according to a first order approximation, by:

α
S

=

-

3
⁢

⁢

β
3

⁡

(

w

s
⁢

⁢
0

-

w

p
⁢

⁢
0

)

β
4

⁡

(

w

s
⁢

⁢
0

-

w

p
⁢

⁢
0

)

2

+

6
⁢

⁢

β
2

⁢

α
P

,

with
α s is the chirp of the stretched signal wave, fed by the second stretcher,
α P is the chirp of the stretched pump wave, fed by the first stretcher,
w s0 is a center pulse of the input signal wave, emitted by the emitting means,
w p0 is a center pulse of the pump wave, emitted by the emitting means, and
β 2 , β 3 , β 4 are the coefficients of the 0, 1 and 2 order terms, in a Taylor expansion, around the value w p0 , of a second order scattering coefficient of the waveguide.

4. The system according to claim 1 , wherein the emitting means comprises a single source of light pulses, to emit an initial pulsed light beam.

5. The system according to claim 4 , wherein the emitting means further comprises spectral selection means, configured to separate two spectral contributions of the initial pulsed light beam, a first spectral contribution forming the pump wave, and a second spectral contribution forming the input signal wave.

6. The system according to claim 4 , wherein the emitting means comprises:
a first source of light pulses, to emit the pump wave; and
a second source of light pulses, to emit the input signal wave;
the first and second sources of light pulses being connected to each other by pulse synchronisation means.

7. The system according to claim 1 , wherein the emitting means further comprises:
separating means, configured to separate two amplitude contributions of the initial pulsed light beam, a first amplitude contribution forming the input signal wave; and
spectral shifting means, configured to receive as an input a second amplitude contribution, and to output the pump wave.

8. The system according to claim 1 , wherein the means for shaping a wave further comprises amplitude and/or phase-shaping means for a pulse envelope.

9. The system according to claim 1 , wherein the waveguide comprises a non-centro-symmetric medium.

10. The system according to claim 1 , wherein the waveguide has a 3-order nonlinearity.

11. An optical parametric chirped pulse amplification method, comprising:
temporally stretching non-monochromatic light pulses as a pump wave, to provide a stretched pump wave, by a first stretcher; and
temporally stretching light pulses, to provide chirped pulses as a stretched signal wave, by a second stretcher;
four wave mixing the stretched pump wave and the stretched signal wave; and
outputting an output signal wave resulting from the four wave mixing, the output signal wave being temporally compressed.

12. The method according to claim 11 , wherein a ratio of a chirp o

Assignees

• Commissariat Energie Atomique
• Centre Nat Rech Scient
• Univ Lille 1 Sciences & Technologies
• Centre Nat Rech Scient
• Univ Lille I Sciences Et Technologies

Inventors

• Hugonnot Emmanuel
• Beaure D'Augeres Patrick
• Bigourd Damien
• Mussot Arnaud
• Kudlinski Alexandre

Classifications

• G02F1/39 Primary

  for parametric generation or amplification of light, infrared or ultraviolet waves · CPC title

• G02F2001/392

  Physics · mapped topic

• G02F1/392

  Parametric amplification · CPC title