Research of Yb-Doped Rare-Earth Calcium Oxyborate Crystal Lasers

Crystal	T /%	P_avr /W	PRF /MHz	E_p /μJ	t_p /ns	P_p /W	η_s /%	λ_c /nm
Yb∶YCOB	70	3.85	0.400	9.63	96	100.3	28	1033.3
Yb∶GdCOB	50	2.38	0.325	7.32	104	70.4	36	1034.1
Yb∶LaCOB	30	1.76	0.140	12.6	288	43.8	38	1079.2
Yb∶LuPO₄	50	5.02	1.67	3.0	55	54.5	54	1014.5

Table 1. 0 Pulsed laser parameters for Yb∶YCOB, Yb∶LuPO₄, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D WS₂ as saturable absorber
View table
Table 1. 0 Pulsed laser parameters for Yb∶YCOB, Yb∶LuPO₄, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D WS₂ as saturable absorber
Crystal T /% P_avr /W PRF /MHz E_p /μJ t_p /ns P_p /W η_s /% λ_c /nm
Yb∶YCOB 80 4.05 0.606 6.67 66 101.0 47 1036.4
Yb∶LuPO₄ 80 4.35 1.33 3.41 28.6 110.0 47 1010.9
Yb∶KLuW 80 1.87 2.18 1.19 39 30.5 71 1024.2

Table 1. 1 Pulsed laser parameters for Yb∶YCOB, Yb∶LaCOB, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D MoTe₂ as saturable absorber
View table
Table 1. 1 Pulsed laser parameters for Yb∶YCOB, Yb∶LaCOB, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D MoTe₂ as saturable absorber
Crystal T /% P_avr /W PRF /MHz E_p /μJ t_p /ns P_p /W η_s /% λ_c /nm
Yb∶YCOB 40 1.58 0.704 2.25 52 40.8 36 1035.5
Yb∶LaCOB 70 2.11 0.357 6.6 103 52.4 32 1037.8
Yb∶KLuW 80 2.06 2.18 1.30 36 36.1 56 1030.6

Table 1. Comparison of CW laser parameters in the main emission band for different Yb∶ReCOB crystals

View table

Table 1. Comparison of CW laser parameters in the main emission band for different Yb∶ReCOB crystals

Crystal	T_opt /%	P_th /W	P_out /W	η_opt /%	η_s /%	λ_c /nm	Pol.
Yb∶YCOB (Y-cut)	10	0.80	22.1	54	71	1042.5	E∥Z
Yb∶GdCOB (Z-cut)	10	1.02	18.2	55	70	1031.5	E∥X
Yb∶YGdCOB (Y-cut)	10	0.79	23.0	57	70	1044.7	E∥Z
Yb∶LaCOB (Y-cut)	10	0.64	8.4	47	51	1046.0	E∥Z

Table 2. Comparison of CW laser parameters in the long-wavelength side band for different Yb∶ReCOB crystals
View table
Table 2. Comparison of CW laser parameters in the long-wavelength side band for different Yb∶ReCOB crystals
Crystal T /% P_th /W P_out /W η_opt /% η_s /% λ_l /nm Pol.
Yb∶YCOB (Z-cut) 1.3 0.16 10.7 56 65 1082-1085 E∥X
Yb∶YGdCOB (Z-cut) 1 0.14 18.1 60 70 1082-1086 E∥X
Yb∶LaCOB (Y-cut) 1 0.14 11.0 62 67 1077-1080 E∥X, E∥Z

Table 3. CW laser parameters in the long-wavelength side band for different Yb∶ReCOB crystals, under the conditions of suppressing the main emission band laser oscillation

View table

Table 3. CW laser parameters in the long-wavelength side band for different Yb∶ReCOB crystals, under the conditions of suppressing the main emission band laser oscillation

Crystal	T /%	P_th /W	P_out /W	η_opt /%	η_s /%	Pol.	λ_l /nm
Yb∶YCOB (X-cut)	5	0.40	13.0	45.1	53	E∥Z	1063.2-1066.1
Yb∶YCOB (Y-cut)	5	0.40	15.0	46.3	54	E∥XE∥Z	1083.5-1084.41063.3-1067.2
Yb∶YCOB (Z-cut)	5	0.36	15.5	44.4	52	E∥X	1083.6-1085.5
Yb∶YGdCOB (Z-cut)	3	0.33	16.2	50.3	58	E∥X	1083-1085

Table 4. Acousto-optic Q-switching laser parameters of Yb∶YCOB crystal at different PRF values
View table
Table 4. Acousto-optic Q-switching laser parameters of Yb∶YCOB crystal at different PRF values
Parameter PRF /kHz
30 10 5 2 0.5 0.2
P_in,max /W 41.3 36.0 36.0 29.2 21.3 21.3
P_avr,max /W 10.2 8.8 6.5 4.2 1.6 1.0
E_p /mJ 0.34 0.88 1.3 2.1 3.2 5.0
t_p /ns 132 43 26 16 14 17
P_p /kW 2.6 20.5 50.0 131.3 214.3 294.1

Table 5. Acousto-optic Q-switching laser parameters of Yb∶GdCOB crystal at different PRF values
View table
Table 5. Acousto-optic Q-switching laser parameters of Yb∶GdCOB crystal at different PRF values
Parameter PRF /kHz
30 10 5 2 0.5 0.2
P_in,max /W 34.2 34.2 25.6 23.5 21.0 19.6
P_avr,max /W 10.2 8.7 6.1 3.8 1.55 0.95
E_p /mJ 0.34 0.87 1.2 1.9 3.1 4.75
t_p /ns 108 36 26 20 17 11
P_p /kW 3.1 24.2 46.2 95.0 182.4 431.8

Table 6. Pulsed laser parameters obtained in passive Q-switching with Cr⁴⁺∶YAG under CW pump for different Yb∶ReCOB crystals

View table

Table 6. Pulsed laser parameters obtained in passive Q-switching with Cr⁴⁺∶YAG under CW pump for different Yb∶ReCOB crystals

Crystal	Q-switching conditions	P_avr,max /W	PRF /kHz	E_p /mJ	t_p /ns	P_p /kW	η_opt /%	η_s /%
Yb∶YCOB	T=20%, T₀=97.5%	10.7	26.3	0.36	22	16.4	42.9	53
	T=40%, T₀=90%	4.13	3.23	1.28	5	256	26.8	49
Yb∶GdCOB	T=20%, T₀=97.5%	15.6	91	0.17	22	7.8	44	53
	T=60%, T₀=84%	4.2	5.7	0.74	3.6	205	12	21

Table 7. Pulsed laser parameters for different crystals, obtained in passive Q-switching with GaAs in the high-repetition-rate high-power mode
View table
Table 7. Pulsed laser parameters for different crystals, obtained in passive Q-switching with GaAs in the high-repetition-rate high-power mode
Crystal P_avr /W PRF /kHz E_p /μJ t_p /ns P_p /kW η_opt /% λ_c /nm
Yb∶YCOB 5.7 166.7 30 153 0.20 21.3 1032.0
Yb∶GdCOB 3.8 100.0 38 79 0.48 20.9 1027.5
Yb∶LuPO₄ 5.0 333.3 15 68 0.22 26.6 1003.0

Table 8. Pulsed laser parameters for different crystals, obtained in passive Q-switching with GaAs in the low-repetition-rate high-energy mode
View table
Table 8. Pulsed laser parameters for different crystals, obtained in passive Q-switching with GaAs in the low-repetition-rate high-energy mode
Crystal P_avr /W PRF /kHz E_p /mJ t_p /ns P_p /kW η_opt /% λ_c /nm
Yb∶YCOB 1.02 1.0 1.02 13.6 75.0 3.5 1022.7
Yb∶GdCOB 1.31 1.92 0.68 9.0 75.6 5.4 1027.0
Yb∶LuPO₄ 0.84 3.7 0.23 5.5 41.3 4.9 1002.0

Table 9. Pulsed laser parameters for Yb-doped garnet crystals, obtained in passive Q-switching with GaAs
View table
Table 9. Pulsed laser parameters for Yb-doped garnet crystals, obtained in passive Q-switching with GaAs
Crystal P_avr /W PRF /kHz E_p /mJ t_p /ns P_p /kW λ_c /nm
Yb∶YAG 1.39 35.7 53.0 3.5 11.1 1030.8
Yb:YGG 1.40 43.5 52.0 3.5 12.4 1025.5
Yb:LuGG 1.10 19.6 82.4 3.3 17.0 1025.8
Yb:GGG 1.53 41.7 55.0 3.4 12.7 1025.7

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Fenfen Liu, Shuxuan Cao, Junhai Liu. Research of Yb-Doped Rare-Earth Calcium Oxyborate Crystal Lasers[J]. Laser & Optoelectronics Progress, 2020, 57(7): 071604

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Paper Information

Special Issue:

Received: Dec. 27, 2019

Accepted: Feb. 12, 2020

Published Online: Mar. 31, 2020

The Author Email: Liu Junhai (junhai_liu@hotmail.com)

DOI:10.3788/LOP57.071604

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. 2 Pulsed laser parameters for Yb∶YCOB, Yb∶GdCOB, Yb∶LaCOB, and Yb∶LuPO4 crystals, obtained in passive Q-switching with Bi2Te3

Table 1. 2 Pulsed laser parameters for Yb∶YCOB, Yb∶GdCOB, Yb∶LaCOB, and Yb∶LuPO4 crystals, obtained in passive Q-switching with Bi2Te3

Table 1. 0 Pulsed laser parameters for Yb∶YCOB, Yb∶LuPO4, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D WS2 as saturable absorber

Table 1. 0 Pulsed laser parameters for Yb∶YCOB, Yb∶LuPO4, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D WS2 as saturable absorber

Table 1. 1 Pulsed laser parameters for Yb∶YCOB, Yb∶LaCOB, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D MoTe2 as saturable absorber

Table 1. 1 Pulsed laser parameters for Yb∶YCOB, Yb∶LaCOB, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D MoTe2 as saturable absorber

Table 1. Comparison of CW laser parameters in the main emission band for different Yb∶ReCOB crystals

Table 1. Comparison of CW laser parameters in the main emission band for different Yb∶ReCOB crystals

Table 2. Comparison of CW laser parameters in the long-wavelength side band for different Yb∶ReCOB crystals

Table 2. Comparison of CW laser parameters in the long-wavelength side band for different Yb∶ReCOB crystals

Table 3. CW laser parameters in the long-wavelength side band for different Yb∶ReCOB crystals, under the conditions of suppressing the main emission band laser oscillation

Table 3. CW laser parameters in the long-wavelength side band for different Yb∶ReCOB crystals, under the conditions of suppressing the main emission band laser oscillation

Table 4. Acousto-optic Q-switching laser parameters of Yb∶YCOB crystal at different PRF values

Table 4. Acousto-optic Q-switching laser parameters of Yb∶YCOB crystal at different PRF values

Table 5. Acousto-optic Q-switching laser parameters of Yb∶GdCOB crystal at different PRF values

Table 5. Acousto-optic Q-switching laser parameters of Yb∶GdCOB crystal at different PRF values

Table 6. Pulsed laser parameters obtained in passive Q-switching with Cr4+∶YAG under CW pump for different Yb∶ReCOB crystals

Table 6. Pulsed laser parameters obtained in passive Q-switching with Cr4+∶YAG under CW pump for different Yb∶ReCOB crystals

Table 7. Pulsed laser parameters for different crystals, obtained in passive Q-switching with GaAs in the high-repetition-rate high-power mode

Table 7. Pulsed laser parameters for different crystals, obtained in passive Q-switching with GaAs in the high-repetition-rate high-power mode

Table 8. Pulsed laser parameters for different crystals, obtained in passive Q-switching with GaAs in the low-repetition-rate high-energy mode

Table 8. Pulsed laser parameters for different crystals, obtained in passive Q-switching with GaAs in the low-repetition-rate high-energy mode

Table 9. Pulsed laser parameters for Yb-doped garnet crystals, obtained in passive Q-switching with GaAs

Table 9. Pulsed laser parameters for Yb-doped garnet crystals, obtained in passive Q-switching with GaAs

Table 1. 2 Pulsed laser parameters for Yb∶YCOB, Yb∶GdCOB, Yb∶LaCOB, and Yb∶LuPO₄ crystals, obtained in passive Q-switching with Bi₂Te₃

Table 1. 2 Pulsed laser parameters for Yb∶YCOB, Yb∶GdCOB, Yb∶LaCOB, and Yb∶LuPO₄ crystals, obtained in passive Q-switching with Bi₂Te₃

Table 1. 0 Pulsed laser parameters for Yb∶YCOB, Yb∶LuPO₄, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D WS₂ as saturable absorber

Table 1. 0 Pulsed laser parameters for Yb∶YCOB, Yb∶LuPO₄, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D WS₂ as saturable absorber

Table 1. 1 Pulsed laser parameters for Yb∶YCOB, Yb∶LaCOB, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D MoTe₂ as saturable absorber

Table 1. 1 Pulsed laser parameters for Yb∶YCOB, Yb∶LaCOB, and Yb∶KLuW crystals, obtained in passive Q-switching with 2D MoTe₂ as saturable absorber

Table 6. Pulsed laser parameters obtained in passive Q-switching with Cr⁴⁺∶YAG under CW pump for different Yb∶ReCOB crystals

Table 6. Pulsed laser parameters obtained in passive Q-switching with Cr⁴⁺∶YAG under CW pump for different Yb∶ReCOB crystals