A standard temperature control device

A temperature control device and etalon technology, applied in the field of lasers, can solve the problems of uneven heating on the surface of the etalon, difficulty in laser resonator cavity, and inability to control the etalon, etc., and achieve the effects of compact structure, uniform heating, and high temperature control accuracy

Inactive Publication Date: 2008-01-16
SHANXI UNIV
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Problems solved by technology

Such as resistance heater can only heat, can not cool, and can only reduce furnace body temperature by the natural heat dissipation of furnace to the outside when temperature is too high, so it is not suitable for quick control, and can not control the temperature of etalon 10 below zero; In addition, Both the control eleme...

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Fig. 3 and Fig. 4 are schematic diagrams and cross-sectional views of the etalon temperature control device of the present invention. In the figure, the etalon 10 is made of K9 glass with two light-transmitting surfaces parallel to each other, and the size of the etalon 10 is φ15×0.5mm . The ring-shaped indium foil 6 with an inner diameter of 5 mm and an outer diameter of 15 mm is placed on the two transparent surfaces of the etalon 10 respectively, and placed in the controlled unit 3 . The controlled unit 3 is composed of two pieces of copper material, and a concave surface with a size equivalent to the etalon 10 is formed on the contact surface of the two pieces of copper, and the etalon 10 and the indium foil 6 are placed in the concave surface. A thermistor with a negative temperature coefficient is installed inside the controlled unit 3 as a sensor 4, and ...

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Abstract

The invention relates to etalon temperature controlling apparatus for lasers, comprising a heat sink (1), a controlling element (2), a controlled unit (3), a sensor (4) and a temperature controlling circuit (5). The controlled unit (3) is made from heat conducting materials, an etalon (10) and the sensor (4) are equipped therein; the controlling element (2) is a semiconductor cooling chip provided with a light-passing hole in the center, the heat-absorbing surface of the semiconductor cooling chip has close contact with one surface of the controlled unit (3), and the heat-radiating surface of the semiconductor cooling chip has close contact with one surface of the heat sink; both the heat sink (1) and the controlled unit (3) are provided with light-passing holes in the center, which are coincident with the hole in the controlling element (2). The etalon temperature controlling apparatus has the advantages of impact structure, wide control scope, high precision in temperature controlling, easy realization in rapid temperature control, and reliable operation in a long time.

Description

technical field [0001] The invention relates to a laser, in particular to an etalon temperature control device for the laser. Background technique [0002] The single-frequency laser obtained by laser diode (LD)-pumped neodymium-doped matrix laser through intracavity frequency doubling has been widely used in many fields, especially in recent years, quantum information, quantum network and related research fields have become the pumping source. The quality and power of single-frequency green lasers put forward higher and higher requirements. In high-power lasers, ring cavity mode selection is generally used to achieve single-frequency output. However, in high-power intracavity frequency-multiplied lasers, stable single longitudinal mode oscillation cannot be obtained only by ring cavity mode selection. [0003] In order to obtain a mode-stabilized single longitudinal mode laser, we need to insert an optical filter in the laser cavity to narrow the stimulated emission bandwi...

Claims

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Application Information

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IPC IPC(8): H01S3/137H01S3/10H01S3/08G05D23/20
Inventor 郑耀辉张宽收彭堃墀
Owner SHANXI UNIV
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