Raman laser based on crystalline in fresnoite structure
A technology of Raman laser and barite, applied in the field of Raman laser
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Embodiment 1
[0055] Example 1: Ba 2 TiSi 2 o 8 Raman crystals for extracavity single-pass Raman lasers.
[0056] structured as figure 1 As shown, the laser consists of a pulsed laser 1 and a Raman crystal 2. Pulse laser 1 is a picosecond pulse laser pumped by a flash lamp, double-modulated by an acousto-optic modulator and a dye saturable absorbing material, and its output wavelength is 532nm, a pulse width of 30ps, and a repetition frequency of 10Hz; 2 TiSi 2 o 8 Raman crystals generate stimulated Raman light. Figure 8 It is the output Raman laser spectrum diagram of the laser. From the figure, we can clearly see the output of the 558nm primary Raman laser and the 587nm secondary Raman laser.
[0057] The Raman crystal 2 is Ba 2 TiSi 2 o 8 Crystal, the size of which is 5 x 5 x 25mm 3 , the transparent surface is 5×5mm 2 , which are polished and uncoated on both sides.
[0058] Ba 2 TiSi 2 o 8 Crystal preparation method:
[0059] Reaction equation: 2BaCO 3 +TiO 2 +2SiO...
Embodiment 2
[0061] Example 2: Ca 2 TiSi 2 o 8 Extracavity double-pass Raman lasers for crystals.
[0062] structured as figure 2 As shown, the laser consists of a pulsed laser 1, an input mirror 3, a Raman crystal 2 and a concave output mirror 4 arranged in sequence along the optical path. The pulsed laser 1 outputs laser light with a wavelength of 532 nm, a pulse width of 30 ps, and a repetition rate of 10 Hz. The input mirror 3 is coated with a dielectric film with a transmittance of more than 99% for incident light at 532nm and a reflectivity of more than 99% for Raman laser at 558nm. The output mirror 4 is coated with a dielectric film with a reflectivity greater than 99% for incident light at 532nm and a transmittance greater than 99% for Raman light at 558nm.
[0063] The pulsed laser 1 is the same as that in Embodiment 1.
[0064] The Raman crystal 3 is Ca 2 TiSi 2 o 8 The crystal, is a cylinder with a length of 35mm. The light-transmitting surface is a circular surfac...
Embodiment 3
[0067] Example 3: Sr 2 TiSi 2 o 8 Crystalline extracavity multiple-pass Raman lasers.
[0068] structured as image 3 As shown, the laser is composed of a pulsed laser 1, an input mirror 3, a Raman crystal 2 and an output mirror 5 arranged in sequence along the optical path. The concave surface of the input mirror 3 faces the pulsed laser 1 , and its plane forms an included angle of 45° with the laser direction. The Raman crystal 2 and the output mirror 5 are located on the optical path of the light reflected by the input mirror 3 .
[0069] The pulsed laser 1 outputs a pulsed laser with a wavelength of 532 nm, a pulse width of 30 ps, and a repetition rate of 10 Hz. The input mirror 3 is coated with a dielectric film with a transmittance of more than 99% for fundamental frequency light and a reflectivity of more than 99% for Raman light (558nm). A dielectric film with a transmittance greater than 99% for Raman light (558nm). The radius of curvature of the concave surfa...
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