CN2605682Y - Acousto-optic Q-switch - Google Patents
Acousto-optic Q-switch Download PDFInfo
- Publication number
- CN2605682Y CN2605682Y CN 03233051 CN03233051U CN2605682Y CN 2605682 Y CN2605682 Y CN 2605682Y CN 03233051 CN03233051 CN 03233051 CN 03233051 U CN03233051 U CN 03233051U CN 2605682 Y CN2605682 Y CN 2605682Y
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- China
- Prior art keywords
- copper foil
- base
- flint glass
- transducer
- switch
- Prior art date
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Abstract
Disclosed is a novel acousto-optic Q switch which comprises a high frequency socket, a base and a switch structure; wherein the switch structure is composed of a matching network, a copper foil, a dense flint glass and a metal biscuit.; a transducer is bonded on the dense flint glass; a surface electrode is plated on the transducer and the copper foil is pressed on the surface electrode. The metal biscuit is pressed on the copper foil to make the copper foil closely contact with the transducer and the cooper foil is directly contacted with the base and is earthed. The metal biscuit is pressed with one side on the heavy flint glass and is contacted with the other side with the base. The metal biscuit is made of aluminum. In the utility model, the defects that the existing acousto-optic Q switch has a large electrical power for drive and needs cooling with water are overcome. Thus the utility model has the advantages of low operating voltage, high repetition frequency, no relationship between Q regulation and state of polarization of light, small size and unneeded water cooling process.
Description
Technical field the utility model relates to Q-switch in the diode pumping solid laser, is specifically related to novel acoustooptic Q-switching.
The curing of will demanding perfection of background technology diode pumping solid laser, without water-cooled, therefore the Q switched element that the most generally uses in this laser is an electro-optical Q-switch, operating voltage higher (more than several hectovolts) when electro-optical Q-switch uses, pulse repetition frequency low (being lower than 200Hz), can only transfer Q to polarised light, these performance limitations the level of complete machine, brought inconvenience to use.Existing acoustooptic Q-switching generally is to make acousto-optic mutual effect dielectric material with fused quartz glass, its acousto-optic high-quality is very low, drive with very big radio-frequency power, and device must use water-cooled like this, and device volume is bigger, is not suitable for being used in the diode pumping solid laser.
Summary of the invention the utility model is higher at above-mentioned existing electro-optical Q-switch operating voltage, and repetition rate is low, can only transfer the shortcoming of Q to polarised light, designs a kind of novel acoustooptic Q-switching.
The purpose of this utility model is achieved in that novel acoustooptic Q-switching, comprise high-frequency socket, base and construction of switch, construction of switch is made up of matching network, Copper Foil, dense flint glass, metal derby, bonding transducer on dense flint glass, be coated with the table electrode on the transducer, be pressed on the table electrode with Copper Foil; Metal derby is pressed on the Copper Foil, and Copper Foil is contacted with transducer closely, and Copper Foil directly contacts and ground connection with base; Be pressed on the dense flint glass with metal derby, the another side of metal derby contacts with base.Described metal derby is an aluminium block.
The optical direction size of dense flint glass is not more than 18mm.Temperature sensor is set in base.
The utility model has overcome existing acoustooptic Q-switching, and to drive electrical power very big, be with the shortcoming of water-cooled: have that operating voltage is low, repetition rate is high, transfer that Q and polarization state have nothing to do, volume is little, without advantages such as water-cooleds.
The utility model is described in further detail below in conjunction with accompanying drawing for description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the A-A cutaway view of Fig. 1.
Embodiment as shown in Figure 1, the utility model acoustooptic Q-switching mainly is made up of high-frequency socket 1, matching network 2, trip bolt 3, aluminium block 4, transducer 5, base 6, Copper Foil 7, dense flint glass 8, aluminium block 9, trip bolt 10, temperature sensor 11 and feedthrough capacitor 12.Make acousto-optic mutual effect medium with dense flint glass, bonding transducer 5 on dense flint glass 8 is coated with the table electrode on transducer 5, and Copper Foil 7 is pressed on the table electrode, Copper Foil 7 ground connection, and directly contact with base; The heat that transducer 5 produces directly is transferred to base 6 by Copper Foil 7.With trip bolt 3 aluminium block 4 is pressed on the Copper Foil 7, Copper Foil 7 is contacted closely with transducer 5, be beneficial to the transmission of the signal of telecommunication and the transmission of heat.With trip bolt 10 aluminium block 9 is pressed on the dense flint glass 8, the another side of aluminium block 9 contacts well with base 6, makes the heat on the dense flint glass 8 be transferred to base 6 by aluminium block 9.The temperature signal of temperature sensor 11 induction bases 6 passes to temperature control power supply by feedthrough capacitor 12, the control power supply according to the height decision of temperature whether with semiconductor cooler to base 6 forced refrigerations.As shown in Figure 2, the optical direction size of dense flint glass 8 is not more than 18mm.
The radio frequency electrical power that the utility model requires is between 1W-5W, and at this moment the operating voltage of driving power is a direct voltage, all can between 15V-24V; Pulse recurrence rate is selected arbitrarily between 1Hz-50KHz; Diffraction efficiency is directly proportional with the radio frequency electrical power, and very little with the polarization state relation, so can not consider polarization state when transferring Q in laser cavity; Because electrical power is little, it just can be worked steadily in the long term without water-cooled.Rf signal is transferred to matching network 2 through high-frequency socket 1 during use, be added to again on the transducer 5, be converted into ultrasonic transmission in dense flint glass 8 by transducer 5, in dense flint glass 8, form refractive-index grating, diffraction by just taking place in laser, and then the Q value in the change laser cavity, to obtain the pulse laser of high repetition frequency, high-peak power.The acousto-optic high-quality of dense flint glass is higher, shortcoming is that laser is had certain absorption, therefore and absorption is directly proportional with the size of optical direction, and novel acoustooptic Q-switching can not be obtained excessively in the size of optical direction, is advisable to be not more than 18mm through the size of experiment test optical direction.Acoustooptic Q-switching is used in the diode pumping solid laser as Q-switch, operating voltage is got 24V, optical direction is of a size of 18mm, electrical power is got 2.5W, do not use water-cooled, obtained peak power 40KW, pulse duration 9ns, pulse recurrence rate 10KHz, polarization state pulse laser arbitrarily by test, confirmed that the utility model acoustooptic Q-switching operating voltage is low, repetition rate is high, transfer that Q and polarization state have nothing to do, volume is little, without the advantage of water-cooled.
Claims (4)
1, novel acoustooptic Q-switching, comprise high-frequency socket (1), base (6) and construction of switch, it is characterized in that construction of switch is made up of matching network (2), Copper Foil (7), dense flint glass (8), metal derby (4,9), go up bonding transducer (5) at dense flint glass (8), transducer is coated with the table electrode on (5), is pressed on the table electrode with Copper Foil (7); Copper Foil (7) contacts closely with transducer (5), and Copper Foil (7) contacts with base (6) and ground connection; Metal derby (9) is pressed on the dense flint glass (8), and the another side of metal derby (9) contacts with base (6).
2, the described novel acoustooptic Q-switching of root a tree name claim 1 is characterized in that described metal derby (4,9) is an aluminium block.
3, the described novel acoustooptic Q-switching of root a tree name claim 1 is characterized in that the optical direction size of dense flint glass (8) is not more than 18mm.
4, root a tree name claim 1,2 or 3 described novel acoustooptic Q-switchings is characterized in that being provided with temperature sensor (11) in base (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03233051 CN2605682Y (en) | 2003-01-26 | 2003-01-26 | Acousto-optic Q-switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03233051 CN2605682Y (en) | 2003-01-26 | 2003-01-26 | Acousto-optic Q-switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2605682Y true CN2605682Y (en) | 2004-03-03 |
Family
ID=34165553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03233051 Expired - Lifetime CN2605682Y (en) | 2003-01-26 | 2003-01-26 | Acousto-optic Q-switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2605682Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213845A (en) * | 2011-06-14 | 2011-10-12 | 中国电子科技集团公司第二十六研究所 | Acousto-optic adjustable light filter with broadband |
-
2003
- 2003-01-26 CN CN 03233051 patent/CN2605682Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213845A (en) * | 2011-06-14 | 2011-10-12 | 中国电子科技集团公司第二十六研究所 | Acousto-optic adjustable light filter with broadband |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130126 Granted publication date: 20040303 |