Intra-cavity round-trip loss measurement of all-solid-state single-frequency laser by introducing extra nonlinear loss

Yongrui Guo; Huadong Lu; Qiwei Yin; Jing Su

doi:10.3788/COL201715.021402

Journals >Chinese Optics Letters >Volume 15 >Issue 2 >Page 021402 > Article

Chinese Optics Letters
Vol. 15, Issue 2, 021402 (2017)

Intra-cavity round-trip loss measurement of all-solid-state single-frequency laser by introducing extra nonlinear loss

Yongrui Guo¹, Huadong Lu^1、2、*, Qiwei Yin¹, and Jing Su^1、2

Author Affiliations

¹State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China

²Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

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DOI: 10.3788/COL201715.021402 Cite this Article Set citation alerts

Yongrui Guo, Huadong Lu, Qiwei Yin, Jing Su. Intra-cavity round-trip loss measurement of all-solid-state single-frequency laser by introducing extra nonlinear loss[J]. Chinese Optics Letters, 2017, 15(2): 021402 Copy Citation Text

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Schematic diagram of the experimental setup. S1, S2: beam splitter; f1, f2: coupling lens; f3: lens; PBS: polarization beam splitter; PD: photodiode detector.

Fig. 1. Schematic diagram of the experimental setup. S1, S2: beam splitter; f1, f2: coupling lens; f3: lens; PBS: polarization beam splitter; PD: photodiode detector.

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Fig. 2. Long-term power stabilities of 1064 nm laser and 532 nm laser for 5 h.

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Fig. 3. Longitudinal-mode structure of the laser by scanning the confocal Fabry–Perot cavity.

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Fig. 4. Measured result of the beam quality.

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Fig. 5. Output powers of 1064 and 532 nm versus the temperature of the LBO crystal and the relevant temperature values for measurement of the intra-cavity round-trip loss.

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Number	$T / ° C$	$Δ T / ° C$	$P_{f} / W$	$P_{s h} / W$	$η / (m^{2} / W)$
A	149.0	0	22.32	1.239	$6.5 \times 10^{- 11}$
B	149.4	0.4	22.40	1.182	$6.166 \times 10^{- 11}$
C	149.8	0.8	22.64	1.023	$5.662 \times 10^{- 11}$
D	150.2	1.2	22,94	0.789	$3.957 \times 10^{- 11}$
E	150.6	1.6	23.27	0.527	$2.582 \times 10^{- 11}$
F	151.0	2.0	23.53	0.287	$1.379 \times 10^{- 11}$

Table 1. Output Powers of 1064 and 532 nm and the Nonlinear Conversion Factors with the Temperature of the LBO Crystal at (A), (B), (C), (D), (E), and (F)

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$t$	19%
$I_{0}$	$8.30827 \times 10^{6} W / m^{2}$
$P_{i n}$	74 W
$l$	18 mm
$d_{eff}$	$1.16 \times 10^{- 12} V / m$
$ε_{0}$	$8.85 \times 10^{- 12} F / m$
$c$	$3 \times 10^{8} m / s$
$n$	1.56
$λ_{f}$	1064 nm
$λ_{s h}$	532 nm
$ω_{1}$	390 μm
$ω_{2}$	84 μm

Table 2. Parameters of the Experimental Laser

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Eqs	$L$ (%)	$K$ (%. $W^{- 1}$ )
(A,B)	6.85	7.47
(A,C)	4.29	6.75
(A,D)	3.99	6.67
(A,E)	4.9	6.92
(A,F)	4.97	6.94
(B,C)	3.49	6.53
(B,D)	3.48	6.57
(B,E)	4.74	6.88
(B,F)	4.86	6.91
(C,D)	3.65	6.58
(C,E)	5.18	7
(C,F)	5.19	7
(D,E)	6.66	7.42
(D,F)	5.19	7.01
(E,F)	5.21	7.01
Average value	4.84	6.91
Standard deviation	0.26	0.07