Compact CW 485-nm laser based on sum-frequency mixing of diode pumped Nd:LuVO<Subscript>4</Subscript>-Yb:YAG lasers

We report for the first time a continuous-wave (CW) coherent radiation at 485 nm by intracavity sum-frequency generation of 916 nm Nd:LuVO₄ laser and 1030 nm Yb:YAG laser. Blue laser is obtained by using a doubly cavity, type-II critical phase matching KTP crystal sum-frequency mixing. With total pump power of 30.2 W, TEM₀₀ mode blue laser at 485 nm of 179 mW is obtained. The blue power stability in 30 min is better than 3%.     

494 nm blue laser based on sum-frequency mixing of diode pumped Nd<Superscript>3+</Superscript> lasers

We report for the first time a continuous-wave (CW) blue radiation at 494 nm by intracavity sumfrequency generation of 912 nm Nd:GdVO₄ laser and 1079 nm Nd:YAlO₃ (Nd:YAP) laser. Using type-I critical phase matching LiB₃O₅ (LBO) crystal, 494 nm blue laser was obtained by 912 and 1079 nm intra-cavity sum-frequency mixing, and output power of 179 mW was demonstrated. At the output power level of 179 mW, the output power stability is better than 3.5% and laser beam quality M ₂ factor is 1.21.     

Intracavity sum-frequency generation of CW blue light in Nd:LuVO<Subscript>4</Subscript> laser

We report for the first time a continuous-wave (CW) blue laser emission by sum-frequency mixing in Nd:LuVO₄ crystal. Using type-I critical phase-matching (CPM) LBO crystal, a blue laser at 493 nm is obtained by 1066 and 916 nm intracavity sum-frequency mixing. The maximum laser output power of 520 mW is obtained when an incident pump laser of 18.2 W is used. At the output power level of 520 mW, the output stability is better than 2.8%. The beam quality M ² value is are about 1.22 and 1.31 in both horizontal and vertical dimensions respectively.     

504 nm blue-green laser based on sum-frequency mixing of diode pumped Nd<Superscript>3+</Superscript> lasers

We report for the first time a continuous-wave (CW) blue-green radiation at 504 nm by intracavity sum-frequency generation of 946 nm Nd:YAG laser and 1080 nm Nd:YAlO₃ (Nd:YAP) laser. Using type-I critical phase matching LiB₃O₅ (LBO) crystal, 504 nm blue-green laser was obtained by 946 and 1080 nm intra-cavity sum-frequency mixing, and output power of 215 mW was demonstrated. At the output power level of 215 mW, the output power stability is better than 4.7% and laser beam quality M² factor is 1.21.     

490-nm generation by sum-frequency mixing of diode pumped Nd:GdVO<Subscript>4</Subscript>-Nd:YLF lasers

We report a continuous-wave (CW) blue laser emission by sum-frequency mixing in Nd:GdVO₄ and Nd:YLF crystals. Using type-I critical phase-matching (CPM) LBO crystal, a blue laser at 490 nm is obtained by 1063 and 908 nm intracavity sum-frequency mixing. The maximum laser output power of 118 mW is obtained when an incident pump laser of 18.2 W is used. At the output power level of 118 mW, the output stability is better than 4.2%.     

500.5-nm blue-green laser based on sum-frequency mixing of diode pumped neodymium lasers

We report for the first time a continuous-wave (CW) coherent radiation at 500.5 nm by intracavity sum-frequency generation of 1063 nm Nd:GdVO₄ laser and 946 nm Nd:YAG laser. Blue-green laser is obtained by using a doubly cavity, type-II critical phase matching KTiOPO₄ (KTP) crystal sum-frequency mixing. With total pump power of 27.8 W, TEM₀₀ mode blue-green laser at 500.5 nm of 421 mW is obtained. At the output power level of 421 mW, the blue-green power stability is better than 2.8% and laser beam quality M ² factor is 1.37.     

CW laser at 484 nm based on frequency-doubled diode-pumped Yb:YAG crystal

We report for the first time, to the best of our knowledge, a Yb:YAG laser operating in a CW on the three-level laser at 968 nm, based on the ² F _5/2-² F _7/2 transition, generally used for a 1030 nm emission. The use of a pump module with 16 passes through the crystal allowed the realization of a Yb:YAG thin-disk laser with 507 mW of continuous wave (CW) output power at 968 nm. Moreover, intracavity second-harmonic generation (SHG) has also been achieved with a power of 58 mW at 484 nm by using a BiB₃O₆ (BIBO) non-linear crystal.     

Diode-pumped Nd:YVO<Subscript>4</Subscript>/Nd:YLF laser at 488 nm

We present a laser architecture to obtain continuous-wave blue radiation at 488 nm. A 808 nm diode-pumped the Nd:YVO₄ crystal emitting at 914 nm. A part of the pump power was then absorbed by the Nd:YVO₄ crystal. The remaining was used to pump the Nd:YLiF₄ (Nd:YLF) crystal emitting at 1047 nm. Intracavity sum-frequency mixing at 914 and 1047 nm was then realized in a BiB₃O₆ (BiBO) crystal to reach the blue radiation. We obtained a continuous-wave output power of 339 mW at 488 nm with a pump laser diode emitting 18.3 W at 808 nm.     

All solid-state CW orange-red laser at 620 nm

We report for the first time a continuous-wave (CW) orange-red radiation at 620 nm by intracavity sum-frequency generation of 1085-nm Nd:YVO₄ laser and 1444-nm Nd:YAG laser. Using type-II critical phase matching KTP crystal, 620-nm orange-red laser was obtained by 1085- and 1444-nm intra-cavity sum-frequency mixing, and output power of 223 mW was demonstrated. At the output power level of 223 mW, the output power stability is better than 3% and laser beam quality M ² factor is 1.32.     

Diode-pumped Nd:LuVO<Subscript>4</Subscript>-Nd:YVO<Subscript>4</Subscript> laser at 492 nm with intracavity sum-frequency-mixing in LiB<Subscript>3</Subscript>O<Subscript>6</Subscript>

We present for the first time a Nd:YVO₄ laser emitting at 1064 nm intracavity pumped by a 916 nm diode-pumped Nd:LuVO₄ laser. A 809 nm laser diode is used to pump the Nd:LuVO₄ crystal emitting at 916 nm, a Nd:YVO₄ laser crystal was pumped at 916 nm and lased at 1064 nm. Intracavity sum-frequency mixing at 916 and 1064 nm was then realized in a LiB₃O₆ (LBO) crystal to reach the blue range. We obtained a continuous-wave output power of 216 mW at 492 nm under 19.6 W of incident pump power at 809 nm.     

Diode-pumped Nd:YVO4-Nd:CNGG crystals blue laser at 462 nm by intracavity sum-frequency-mixing

We report a laser architecture to obtain continuous-wave (cw) blue radiation at 462 nm. A 808 nm diode-pumped the Nd:YVO₄ crystal emitting at 914 nm. A part of the pump power was then absorbed by the Nd:YVO₄ crystal. The remaining was used to pump the Nd:CNGG crystal emitting at 935 nm. Intracavity sum-frequency mixing at 914 and 935 nm was then realized in a LiB₃O₅ (LBO) crystal to reach the blue radiation. We obtained a continuous-wave output power of 892 mW at 462 nm with a pump laser diode emitting 18.4 W at 808 nm.     

Diode-Pumped Nd:CNGG-LBO CW sum-frequency mixing blue-green laser at 497 nm

We report for the first time a continuous-wave (CW) blue-green laser emission by sum-frequency mixing in Nd:CNGG crystal. Using type-I critical phase-matching LBO crystal, a blue-green laser at 497 nm is obtained by 1061 and 935 nm intracavity sum-frequency mixing. The maximum laser output power of 232 mW is obtained when an incident pump laser of 18.2 W is used. At the output power level of 232 mW, the output stability is better than 3.67%. The beam quality M ² value is are about 1.26 and 1.38 in both horizontal and vertical dimensions respectively.     

Diode-pumped Nd:LuVO4-Nd:YLiF4 crystals blue laser at 489 nm by intracavity sum-frequency-mixing

We present a laser architecture to obtain continuous-wave blue radiation at 489 nm. An 809 nm diode-pumped the Nd:LuVO₄ crystal emitting at 916 nm. A part of the pump power was then absorbed by the Nd:LuVO₄ crystal. The remaining was used to pump the Nd:YLiF₄ (Nd:YLF) crystal emitting at 1047 nm. Intracavity sum-frequency mixing at 916 and 1047 nm was then realized in a LiB₃O₅ (LBO) crystal to reach the blue radiation. We obtained a continuous-wave output power of 425 mW at 489 nm with a pump laser diode emitting 18.4 W at 809 nm.     

Diode-pumped Nd:LuVO<Subscript>4</Subscript>-Nd:YLF laser at 590 nm

We report a continuous-wave (CW) yellow laser emission by sum-frequency mixing in two Nd:LuVO₄ and Nd:YLF crystals. Using type-I critical phase-matching (CPM) LBO crystal, a yellow laser at 590 nm is obtained by 1066 and 1321 nm intracavity sum-frequency mixing. The maximum laser output power of 223 mW is obtained when an incident pump laser of 18.2 W is used. At the output power level of 223 mW, the output stability is better than 4.5%.     

Dual-wavelength Nd:YAP laser at 930 and 1341 nm and sum-frequency mixing for an emission at 549 nm

A dual-wavelength continuous-wave (CW) diode end-pumped Nd³⁺:YAlO₃ (Nd:YAP) laser that generates simultaneous laser action at the wavelengths 930 and 1341 nm is demonstrated. A total output power of 778 mW for the dual-wavelength was achieved at the incident pump power of 17.8 W. Furthermore, intracavity sum-frequency mixing at 930 and 1341 nm was then realized in a LBO crystal to reach the yellow-green range. We obtained a total CW output power of 103 mW at 549 nm.     

CW green laser at 520 nm based on sum-frequency mixing of diode pumped Yb:YAG laser

We report for the first time a continuous-wave (CW) green laser emission by sum-frequency mixing in Yb:YAG crystal. Using type-I critical phase-matching LBO crystal, a green laser at 520 nm is obtained by 1030 and 1048 nm intracavity sum-frequency mixing. The maximum laser output power of 269 mW is obtained when an incident pump laser of 17.8 W is used. At the output power level of 269 mW, the output stability is better than 3.2%.     

Diode-Pumped Yb:S-FAP Thin-Disk Laser Operating at 985 nm and the Second-Harmonic Generation at 492.5 nm

We report a diode-pumped continuous-wave (CW) thin-disk Yb³⁺-doped Sr₅(PO₄)₃F (Yb:S-FAP) laser operating at 985 nm. We achieve a power of 4.34 W at 980 nm in the CW operation regime with a fiber-coupled laser diode emitting 17.2 W at 914 nm. Furthermore, we demonstrate intracavity second-harmonic generation in the continuous-wave mode with a power of 893 mW at 492.5 nm using a BiB₃O₆ (BiBO) nonlinear crystal. The fluctuation of the blue output power was better than 3.57%. The M₂ factors are about 1.15 and 1.18 in the X and Y directions, respectively.     

Diode-pumped Nd:YVO<Subscript>4</Subscript>-Nd:YLF blue laser at 488 nm by intracavity sum-frequency-mixing

We report a laser architecture to obtain continuous-wave blue radiation at 488 nm. A 808 nm diodepumped the Nd:YVO₄ crystal emitting at 914 nm. A part of the pump power was then absorbed by the Nd:YVO₄ crystal. The remaining was used to pump the Nd:YLF crystal emitting at 1047 nm. Intracavity sum-frequency mixing at 914 and 1047 nm was then realized in a LBO crystal to reach the blue radiation. We obtained a continuous-wave output power of 514 mW at 488 nm with a pump laser diode emitting 19.6 W at 808 nm.     

Efficient intracavity second-harmonic generation at 930 nm in a BiB<Subscript>3</Subscript>O<Subscript>6</Subscript> crystal

It is reported that efficient continuous-wave (CW) blue laser generation at 465 nm in a BiB₃O₆ (BiBO) crystal at type-I phase matching direction performed with a diode-pumped Nd³⁺:YAlO₃ (Nd:YAP) laser. With incident pump power of 18.4 W, output power of 823 mW at 465 nm has been obtained using a 10 mm-long BiBO crystal. At the output power level of 823 mW, the output stability is better than 2.3%.     

Efficient all solid-state continuous-wave orange laser at 598 nm

We report for the first time a continuous-wave (CW) orange radiation at 598 nm by intracavity sum-frequency generation of 1341 nm Nd:GdVO₄ laser and 1080 nm Nd:YAlO₃ (Nd:YAP) laser. Orange laser is obtained by using a doubly cavity, type-II critical phase matching KTP crystal sum-frequency mixing. With total pump power of 36 W, TEM₀₀ mode orange laser at 598 nm of 268 mW is obtained. The orange power stability in 30 min is better than 3.8%.