Continuous wave dual-wavelength Nd:YVO4 laser working at 1064 and 1066 nm

Fig. 1. Experimental setup of CW dual-wavelength

Nd : {YVO}_{4}

laser.

Fig. 2. Output power of 1064 nm laser as a function of the incident pump power.

Fig. 3. Output spectrum of the

Nd : {YVO}_{4}

laser with the pump light polarized parallel to the crystal’s

c

-axis (left) and

b

-axis (right).

Fig. 4. Total output powers of the dual-wavelength laser at 1064 and 1066 nm as a function of the incident pump power.

Fig. 5. Output spectrum of the dual-wavelength

Nd : {YVO}_{4}

laser at the incident pump power of 2.85 W.

Fig. 6. Output power of the dual-wavelength

Nd : {YVO}_{4}

laser as a function of the incident pump power for wavelengths of 1064 and 1066 nm.

Fig. 7. Transitions within Nd:YVO4 crystal (left) between different energy levels, (right) from energy level

{}^{4}{F_{3 / 2}}

to

{}^{4}{I_{11 / 2}}

with Stark splitting resulting in 1064 and 1066 nm emissions.

Fig. 8. Effective stimulated emission cross section from

{}^{4}{F_{3 / 2}}

to

{}^{4}{I_{11 / 2}}

of

Nd : {YVO}_{4}

^[22].

Fig. 9. Relationship between the polarization direction of the pump light

E

and the

Nd : {YVO}_{4}

crystal axis.