阅读说明：本技术 一种新型双晶体rtp普克尔盒装配 (Novel assembly of bicrystal RTP pockels box ) 是由 常亮 周煌 王盟 陈立元 于 2019-04-10 设计创作，主要内容包括：本发明涉及一种新型双晶体RTP普克尔盒装配,包含两块RTP(磷酸钛氧铷)晶体,一个半波片,和两个电极；所述的半波片插入在两块RTP晶体之间；所述的两块RTP晶体的z轴相互平行,无需正交放置；所述的半波片还可以补偿由于RTP晶体温度升高而产生的热致退偏效应,提高普克尔盒的性能。本发明降低了双晶体RTP普克尔盒的装配难度,并且还可以补偿RTP晶体在高功率激光器中工作时产生的热致退偏效应；因此具有结构简单紧凑、易加工、退偏补偿的特点；可以在激光器及其相关技术领域推广应用。(The invention relates to a novel double-crystal RTP Pockels cell assembly, which comprises two RTP (rubidium titanyl phosphate) crystals, a half-wave plate and two electrodes; the half-wave plate is inserted between the two RTP crystals; the z-axes of the two RTP crystals are parallel to each other and do not need to be orthogonally placed; the half-wave plate can also compensate the thermotropic depolarization effect generated by the temperature rise of the RTP crystal, and improve the performance of the Pockels cell. The invention reduces the assembly difficulty of the double-crystal RTP Pockels cell, and can also compensate the thermotropic depolarization effect generated when the RTP crystal works in a high-power laser; therefore, the device has the characteristics of simple and compact structure, easy processing and depolarization compensation; can be popularized and applied in the laser and the related technical field.)

1. A novel dual crystal RTP pockels cell assembly (100) includes two RTP (titanyl rubidium phosphate) crystals (102), a half-wave plate (103), and two electrodes (101).

2. A new twin crystal RTP pockels cell assembly as claimed in claim 1, wherein the two RTP crystals (102) are both cut in X-or Y-direction; and the Z axes of the two RTP crystals (102) are not required to be orthogonally arranged.

3. A novel double crystal RTP pockels cell assembly as claimed in claim 1, wherein said half-wave plate (103) is inserted between said two RTP crystals (102) to rotate the linearly polarized light passing through the first RTP crystal by 90 ° and then to enter the second RTP crystal, so as to achieve the purpose of eliminating the need for the two crystals to be placed orthogonally in Z-axis.

4. A novel twin crystal RTP pockels cell assembly as claimed in claim 1, wherein said half-wave plate (103) also compensates for thermally induced depolarization effects caused by temperature increases in the electro-optic crystal when operating in a high power laser.

5. A new type of bi-crystal RTP pockels cell assembly as claimed in claim 1, wherein said two electrodes (101) can be conductive rubber, or other conductive metal.

6. A novel twin crystal RTP pockels cell assembly as claimed in claim 1, wherein said two electro-optic crystals are not only RTP crystals, but also other temperature sensitive electro-optic crystals such as KTP.

Technical Field

The invention relates to a novel double-crystal RTP Pockels cell assembly, belongs to the field of laser technology and application thereof, and particularly belongs to the field of manufacturing of photoelectric switching devices.

Background

The RTP crystal is a good quality electro-optical crystal, and when the RTP crystal is used as an electro-optical switch, a single RTP crystal has static birefringence and must be matched for use. Typically the crystals are cut at an angle of either the X or Y refractive index axes, and thus when used in pairs, the Z axes of the two crystals are typically placed orthogonally. Fig. 2 shows the main assembling method of the current double-crystal RTP pockels cell. The assembly method has the characteristics of complex structure, high machining precision requirement, high assembly difficulty and the like, improves the production cost of products, and reduces the yield of the products; and because there is no depolarization compensation structure, when high-power laser is injected, the RTP crystal can produce more serious thermal depolarization effect, so that the device is sensitive to working temperature, and important performance parameter indexes such as extinction ratio of the Pockels cell are reduced.

Disclosure of Invention

Aiming at the problems of complex structure, high assembly difficulty and incapability of depolarization compensation of the conventional bicrystal RTP Pockel box, the invention provides a novel bicrystal RTP Pockel box assembly, which comprises two RTP (rubidium titanyl phosphate) crystals, a half-wave plate and two electrodes as shown in figure 1.

The cutting directions of the two RTP crystals are both X cutting or Y cutting; and the Z axes of the two RTP crystals are not required to be orthogonally arranged.

The half-wave plate is inserted between the two RTP crystals, and linearly polarized light passing through the first RTP crystal is incident to the second RTP crystal after rotating for 90 degrees, so that the aim of avoiding the orthogonal arrangement of the Z axes of the two crystals is fulfilled.

The half-wave plate can also compensate the thermal depolarization effect caused by the temperature rise of the electro-optic crystal when the electro-optic crystal works in a high-power laser.

The two electrodes (101) may be conductive rubber, or other conductive metal.

The two electro-optical crystals can be not only RTP crystals, but also other electro-optical crystals sensitive to temperature, such as KTP and other electro-optical crystals.

Other structures such as the insulating housing and the window sheet are all in the prior art and are not described in detail herein.

The invention has the following advantages: after the half-wave plate is inserted between the two RTP crystals, the two RTP crystals do not need to be orthogonally placed, so that the assembly difficulty is greatly reduced, and the electrode structure is simplified; and the half-wave plate can compensate the thermal depolarization effect of the RTP crystal, so that the sensitivity of the device to temperature is reduced, and important performance parameter indexes such as the extinction ratio of the Pockels cell are improved.

Drawings

Fig. 1 is a schematic diagram of the principle of the assembling method of the novel double-crystal RTP Pockels cell.

Fig. 2 is a schematic diagram of a conventional two-crystal RTP pockels cell assembly structure.

Detailed Description

A novel dual crystal RTP pockels cell assembly (100) includes two RTP (titanyl rubidium phosphate) crystals (102), a half-wave plate (103), and two electrodes (101).

The cutting directions of the two RTP crystals (102) are both X-cut or Y-cut; and the Z axes of the two RTP crystals (102) are not required to be orthogonally arranged.

The half-wave plate (103) is inserted between the two RTP crystals (102), and linearly polarized light passing through the first RTP crystal is incident into the second RTP crystal after being rotated by 90 degrees, so that the aim of avoiding the orthogonal arrangement of the Z axes of the two crystals is fulfilled.

The half-wave plate (103) can also compensate the thermal depolarization effect caused by the temperature rise of the electro-optic crystal when the electro-optic crystal works in a high-power laser.

The two electrodes (101) may be conductive rubber, or other conductive metal.

The two electro-optical crystals can be not only RTP crystals, but also other electro-optical crystals sensitive to temperature, such as KTP and other electro-optical crystals.

Other structures such as the insulating housing and the window sheet are all in the prior art and are not described in detail herein.

The above description is only one embodiment of the present invention, and it should be noted that the described embodiment is only one embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step, are within the scope of the present invention.