Temporal self-modifying characteristics of pulse propagation in multiphoton absorbers

Kun Cheng; Sujuan Zhang; Wei Li; Wanjun Dai; Dongxia Hu; Feng Jing

doi:10.3788/COL201513.070009

Journals >Chinese Optics Letters >Volume 13 >Issue 7 >Page 070009 > Article

Chinese Optics Letters
Vol. 13, Issue 7, 070009 (2015)

Temporal self-modifying characteristics of pulse propagation in multiphoton absorbers

Kun Cheng^1、*, Sujuan Zhang¹, Wei Li¹, Wanjun Dai², Dongxia Hu², and Feng Jing^2、**

Author Affiliations

¹Shandong Institute of Spacecraft Electrical Technology, Yantai 264670, China

²Laser Fusion Research Center, China Academic of Engineering Physics, Mianyang 621900, China

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DOI: 10.3788/COL201513.070009 Cite this Article Set citation alerts

Kun Cheng, Sujuan Zhang, Wei Li, Wanjun Dai, Dongxia Hu, Feng Jing. Temporal self-modifying characteristics of pulse propagation in multiphoton absorbers[J]. Chinese Optics Letters, 2015, 13(7): 070009 Copy Citation Text

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Fig. 1. Schematic diagram of a general five-level chromophore.

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Fig. 2. (a) Normalized population density on S0 versus time; (b) corresponding absorption coefficient at entrance region, r=0.

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Fig. 3. Intensity profile versus time of input and output pulse at r=0.

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Fig. 4. Modulation as a function of propagation distance at r=0, for I0 and 0.5I0.

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Fig. 5. Dynamic coefficients for 3PA and TPA as a function of time at entrance region, r=0.

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Fig. 6. Intensity profile versus time of output pulse for 3PA at r=0.

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Fig. 7. (a) Transmission versus distance for 3PA and TPA; (b) modulation versus distance for 3PA and TPA.

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Fig. 8. Ratio of the modulation diminishment to the energy loss versus distance.

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Parameters	TPA	3PA
$σ_{3 PA}$ ( ${cm}^{6} / W^{2}$ )		$5.369 \times 10^{- 39}$
$σ_{TPA}$ ( ${cm}^{4} / W^{2}$ )	$2.5 \times 10^{- 29}$
$σ_{12}$ ( ${cm}^{2}$ )	$1.68 \times 10^{- 20}$
$σ_{34}$ ( ${cm}^{2}$ )	$3.0 \times 10^{- 17}$
$k_{10}$ ( ${ns}^{- 1}$ )	3.68
$k_{21}$ ( ${ps}^{- 1}$ )	0.602
$k_{13}$ ( ${μs}^{- 1}$ )	22.08
$k_{30}$ ( ${ms}^{- 1}$ )	$2.717 \times 10^{3}$
$k_{43}$ ( ${ps}^{- 1}$ )	$1.0 \times 10^{- 4}$
$L$ (mm)	10	10
$N_{T}$ ( ${cm}^{- 3}$ )	$1.2 \times 10^{20}$	$5.96 \times 10^{20}$