Abstract
Simulations using a 3D, broad bandwidth, numerical code also demonstrate FM-FEL operation for parameters typical of FEL facilities currently under construction. Harmonic bunching methods are used to seed the FM-FEL modes to generate a temporally correlated frequency modulated output over a large bandwidth. This new, FM-FEL mode of operation scales well for X-ray generation, offering users a significantly new form of high-power, short wavelength FEL output.
| Language | English |
|---|---|
| Pages | 8792-8799 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 27 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 18 Mar 2019 |
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Keywords
- electric fields
- free electron lasers
- frequency modulated lasers
Cite this
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Frequency modulated free electron laser. / Campbell, L. T.; McNeil, B. W. J.
In: Optics Express, Vol. 27, No. 6, 18.03.2019, p. 8792-8799.Research output: Contribution to journal › Letter
TY - JOUR
T1 - Frequency modulated free electron laser
AU - Campbell, L. T.
AU - McNeil, B. W. J.
N1 - Has been highlighted as an Editor's Pick. Editor's Picks serve to highlight articles with excellent scientific quality and are representative of the work taking place in a specific field.
PY - 2019/3/18
Y1 - 2019/3/18
N2 - It is shown that the output frequency of a free electron laser may be modulated to generate a series of modes that span a bandwidth of at least an order of magnitude greater than the normal FEL bandwidth. This new method of frequency modulated FEL operation has close analogies to frequency modulation in conventional cavity lasers. The FM-FEL is analysed and described in the linear regime by a summation over the exponentially amplified frequency modes.Simulations using a 3D, broad bandwidth, numerical code also demonstrate FM-FEL operation for parameters typical of FEL facilities currently under construction. Harmonic bunching methods are used to seed the FM-FEL modes to generate a temporally correlated frequency modulated output over a large bandwidth. This new, FM-FEL mode of operation scales well for X-ray generation, offering users a significantly new form of high-power, short wavelength FEL output.
AB - It is shown that the output frequency of a free electron laser may be modulated to generate a series of modes that span a bandwidth of at least an order of magnitude greater than the normal FEL bandwidth. This new method of frequency modulated FEL operation has close analogies to frequency modulation in conventional cavity lasers. The FM-FEL is analysed and described in the linear regime by a summation over the exponentially amplified frequency modes.Simulations using a 3D, broad bandwidth, numerical code also demonstrate FM-FEL operation for parameters typical of FEL facilities currently under construction. Harmonic bunching methods are used to seed the FM-FEL modes to generate a temporally correlated frequency modulated output over a large bandwidth. This new, FM-FEL mode of operation scales well for X-ray generation, offering users a significantly new form of high-power, short wavelength FEL output.
KW - electric fields
KW - free electron lasers
KW - frequency modulated lasers
UR - https://www.osapublishing.org/oe/home.cfm
U2 - 10.1364/OE.27.008792
DO - 10.1364/OE.27.008792
M3 - Letter
VL - 27
SP - 8792
EP - 8799
JO - Optics Express
T2 - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 6
ER -