J. Eur. Opt. Society-Rapid Publ. 21, 18( 2025) 185
Figure 2. Intensity distribution of the TLP( blue line) for case I( a) and case II( b), showing the compressed pulse using a grism-only compressor( red line) and the compressed pulse with an additional SF10 glass piece to the grism pair( green line), with configurations described in Table 1( rows 1 – 2 for case I, rows 3 – 4 for case II).
Table 1. Parameters for the grism and grism + glass compression systems used for the two pulse compression cases described in the text. Values are given for the prism angle( a D), input grism angle( h in), incident depth( L in), grisms separation( L GRISM), grism tip-to-tip distance( L tip), grating density( C Grating) and the SF10 slab thickness z.
System |
a D(°) |
h in(°) |
L in( mm) |
L GRISM( mm) |
L tip( mm) |
C Grating( lines / mm) |
z( mm) |
Grism( case I) |
14 |
7 |
85 |
62 |
220 |
1000 |
– |
Grism + glass( case I) |
15 |
7 |
14 |
71 |
251 |
1100 |
46.5 |
Grism( case II) |
30 |
16 |
15 |
30 |
0 |
1000 |
– |
Grism + glass( case II) |
10 |
22 |
35.5 |
8.5 |
7 |
450 |
3.55 |
for this new case( case II). On one hand, the grism-only compressor shortens the pulse showing a relatively clean profile but with a slightly longer temporal duration than the TLP. In this case, the pulse reaches a peak intensity that is 58.96 % of the TLP peak intensity, showing side lobs as intense as 1.05 % of the pulse peak intensity. The configuration of the compressor that yields this pulse is detailed in the third row of Table 1. On the other hand, the grism + glass compressor setup shows a much better performance, achieving a compressed pulse reaching 85.48 % of the peak intensity of the TLP and showing side lobs with a maximum intensity value of 0.47 % of the pulse peak intensity. The configuration of this new compressor proposal is detailed in the fourth row of Table 1.
4 Conclusion
We have demonstrated that a compressor based on a pair of grisms with the addition of a piece of glass is a very good option to achieve clean ultrashort post-compressed pulses from an all-bulk MPC post-compression setup. We have shown that this setup works for pulses both in the multicycle and few-cycle regimes, and we have also verified that the introduction of a piece of glass in the compression setup notably improves the cleanness of the compressed pulse.
Funding
This work was supported by: PID2022-142340NB-I00 and PRE2020-092181, funded by the Spanish Ministry of Science and
Innovation, and grant No. SA108P24 and Escalera de Excelencia CLU-2023-1-02 co-funded by the P. O. FEDER of Castilla y León 2021 – 2027.
Conflicts of interest The authors have nothing to disclose.
Data availability statement
Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.
Author contribution statement
J. S. R and E. C. J: Conceptualization, methodology and supervision. V. W. S. S.: Software, validation and formal analysis. All the authors contribute to writing and preparing the original draft, review and editing. J. S. R.: Fund acquisition.
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