Characterization of Laser Intensity Noise for Single-Frequency Laser with Multiple-Gain Media in Single Laser Cavity

Yongrui Guo; Lei Huang; Xuesen Xu; Shanshan Chen; Huan Yang; Nana Zhang

doi:10.3788/AOS241317

Acta Optica Sinica, Volume. 44, Issue 23, 2314001(2024)

Characterization of Laser Intensity Noise for Single-Frequency Laser with Multiple-Gain Media in Single Laser Cavity

Yongrui Guo^1,2, Lei Huang¹, Xuesen Xu¹, Shanshan Chen¹, Huan Yang¹, and Nana Zhang^1、*

Author Affiliations

¹School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

²Postdoctoral Research Workstation of Chongqing Key Laboratory of Optoelectronic Information Sensing and Transmission Technology, Chongqing 400065, China

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Abstract Get PDF(in Chinese)

Figures & Tables(5)

Fig. 1. Laser intensity noise spectra of laser with the output power of 50 W

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Fig. 2. Laser intensity noise spectra of laser with output power of 101 W. (a) Using equivalent stimulated radiation rate model; (b) using equivalent atomic number model

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Fig. 3. Laser intensity noise spectra of laser with output power of 140 W. (a) Using equivalent stimulated radiation rate model; (b) using equivalent atomic number model

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Table 0. [in Chinese]

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Table 0. [in Chinese]

Laser parameter	Laser (50 W)^[13]	Laser (101 W)^[19]	Laser (140 W)^[20]
N_LC (crystal number)	1	2	4
P_in (single crystal) /W	113	120	94
T /%	25	37	55
L /mm	450	948	1700
$2 κ_{m}$ /s^-1	8.33×10⁷	5.85×10⁷	4.85×10⁷
$2 κ_{l}$ /s^-1	1.03×10⁷	7.90×10⁶	4.41×10⁶
$2 κ$ /s^-1	9.36×10⁷	6.64×10⁷	5.29×10⁷
$η_{t}$	0.95
$η_{a}$	0.88
$η_{q}$	0.835
$ρ_{l}$ /(kg/ m³)	4.22×10³
$ρ_{c}$ /m²	1.26×10^-26
C_w /%	0.8
δ /%	5
σ_s /cm²	25×10^-29
$l$ /mm	20
n	1.96
h /(J·s)	6.63×10^-34
$ω_{p}$ / $μ m$	533
c /(m/s)	3×10⁸
$τ_{f}$ / $μ s$	100
$τ$ / $n s$	30
$V_{P u m p}$ /dB	7

Table 2. Stimulated radiation rates of 101 W and 140 W lasers obtained using two models
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Table 2. Stimulated radiation rates of 101 W and 140 W lasers obtained using two models
Laser type Equivalent stimulated radiation rate G /s^-1 Equivalent atomic number G /s^-1
101 W 1.1402×10¹¹ 1.6127×10¹¹
140 W 8.9931×10¹⁰ 1.7986×10¹¹

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Yongrui Guo, Lei Huang, Xuesen Xu, Shanshan Chen, Huan Yang, Nana Zhang. Characterization of Laser Intensity Noise for Single-Frequency Laser with Multiple-Gain Media in Single Laser Cavity[J]. Acta Optica Sinica, 2024, 44(23): 2314001

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