CN87212929U - Nanosecond twin-pulse light gate for solid-state laser - Google Patents
Nanosecond twin-pulse light gate for solid-state laser Download PDFInfo
- Publication number
- CN87212929U CN87212929U CN 87212929 CN87212929U CN87212929U CN 87212929 U CN87212929 U CN 87212929U CN 87212929 CN87212929 CN 87212929 CN 87212929 U CN87212929 U CN 87212929U CN 87212929 U CN87212929 U CN 87212929U
- Authority
- CN
- China
- Prior art keywords
- nanosecond
- twin
- solid
- laser
- state laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Landscapes
- Lasers (AREA)
Abstract
The utility model relates to a nanosecond twin-pulse light gate for a solid-state laser, which belongs to the technical field of laser devices. A Q-switch which is formed by an electro-optical crystal and a polarizing prism, a high voltage electronic square wave generator and the intracavity pruning can make ruby lasers or other solid lasers generate adjustable twin-pulse laser of which the pulse width has the magnitude order of one nanosecond and the interval has the magnitude order of 10 nanoseconds. Because the utility model can be used for carrying out high-speed photography, holographic interference metering and speckle interference metering to a moving process with ultra-high-speed, the nanosecond twin-pulse light gate for solid-state laser has important application to the research in scientific fields such as explosion process, combustion process in engines, hypervelocity wind tunnels, etc.
Description
The utility model belongs to the Laser Devices technical field.
As seen the generation of coherent light dipulse is fast process to be carried out one of necessary technology means of Holographic Interferometry, speckle interference metering or high-speed photography.
With high-speed photography device, holographic interference or the speckle interference metering device of double-pulse laser device as light source, its scope of application (promptly can to metering or the speed of the motion process of photography) depend primarily on the interval of pulse duration and two pulses.Pulse duration and bigger at interval, the motion process that is suitable for is slower.
Output light wavelength is that 0.6943 micron ruby laser is the as seen light source of relevant short pulse of the most general so far generation.Existing dipulse ruby laser generally adopts secondary to transfer Q scheme, the light pulse of being exported, its width
30 nanoseconds, at interval
5 microseconds.With the motion that the dipulse light of this index removes instrumentation micron dimension object, its longitudinal velocity generally should be limited in
10 meter per second magnitudes.
The purpose of this utility model is to shorten greatly the pulse duration and the pulse spacing of the ruby laser and the double-pulse laser of other solid state laser outputs, to adapt to the more needs of high-speed motion process instrumentation.
The technical solution of the utility model as shown in the figure.Wherein 1. being electrooptic crystal, 2. is thyratron, 3. is gap, 4. is devating prism, 5. is transmission line, all is resistance with (12) 6., 7. is working-laser material, is speculum 8. and 9., all is DC high-voltage power supply with (11) 10., and (13) are capacitors.Operation principle is as follows.Give capacitor (13) charging by power supply (11), and by resistance (12) with 6. 1. apply quarter-wave voltage, 10. 5. charge to transmission line by power supply to electrooptic crystal.Triggering signal makes 2. conducting and make electrooptic crystal 1. move back pressure of thyratron, causes an overvoltage that surpasses disruptive critical voltage (because gap has to puncture and form time delay, this moment, its did not puncture immediately) on 3. at gap simultaneously.After transferring Q, the endovenous laser vibration is set up gradually.When endovenous laser reaches certain intensity, from devating prism 4. the laser-triggered spark gap that spills of side direction 3. make its conducting immediately.At this moment, transmission line 5. just by gap 3., 2. 6. resistance discharge with thyratron, electrooptic crystal is applied in the voltage square wave that amplitude equals the half-wave voltage of this crystal on 1. simultaneously.Voltage that 1. electrooptic crystal is gone up rise and decrement phase between the rising edge and the trailing edge of voltage square wave (promptly corresponding to), the pairwise orthogonal component that comes and goes by crystal polarization laser 1. produces by zero bit phase delay to 2 π, and 4. the corresponding change of its polarization state also reflects output from devating prism.The effect of capacitor (13) and resistance (12) is to guarantee that at gap 2. thyratron still is in conducting state 3. during conducting.
When electrooptic crystal 1. near speculum 8. the time, the bottom width of light pulse is approximately equal to the width on edge before and after the voltage square wave respectively, the latter is depended on gap ON time 3. again.The interval of two pulses is determined by transmission line length 5..
The utility model can produce pulse duration
1 nanosecond, the pulse spacing is adjustable double-pulse laser between 2 nanoseconds to 30 nanoseconds.Thereby can be used for longitudinal velocity＞hundred meter per seconds, dimension is that holographic interference or speckle interference metering and high-speed photography are carried out in the object of micron dimension and the random distribution field that is made of this type games particulate colony.For dimension larger object or other flow fields, speed limit that can instrumentation can be bigger, thereby have important scientific value and will produce the huge social benefit.
Claims (1)
1, a kind of nanosecond dipulse optical gate of solid state laser, it is characterized in that the high-tension electricity square-wave generator that is made of transmission line 5., electrooptic crystal 1., devating prism 4., thyratron 2., gap 3., build-out resistor 6., keeping resistance (12) and capacitor (13) forms, a high-tension electricity square-wave generator output and a gap side 3. 5. links, 6. gap opposite side and electrooptic crystal positive electrode and build-out resistor 1. 3. link, one client link capacitor (13) of resistance (12), the other end connect thyratron 2. positive pole and build-out resistor 6., the laser that 4. devating prism sews incide gap 3. in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87212929 CN87212929U (en) | 1987-08-29 | 1987-08-29 | Nanosecond twin-pulse light gate for solid-state laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87212929 CN87212929U (en) | 1987-08-29 | 1987-08-29 | Nanosecond twin-pulse light gate for solid-state laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87212929U true CN87212929U (en) | 1988-08-31 |
Family
ID=4827514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87212929 Withdrawn CN87212929U (en) | 1987-08-29 | 1987-08-29 | Nanosecond twin-pulse light gate for solid-state laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87212929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364187C (en) * | 2005-01-07 | 2008-01-23 | 清华大学 | Internal cavity electrically controlled wavelength code output method and biwavelength laser module thereof |
-
1987
- 1987-08-29 CN CN 87212929 patent/CN87212929U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364187C (en) * | 2005-01-07 | 2008-01-23 | 清华大学 | Internal cavity electrically controlled wavelength code output method and biwavelength laser module thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201528122U (en) | Q-switched laser of electro-optical lanthanum gallium silicate single crystal | |
| CN102769245A (en) | 1064nm single-frequency double-pulse laser for seed injection | |
| GB1358023A (en) | Lasers | |
| CN87212929U (en) | Nanosecond twin-pulse light gate for solid-state laser | |
| CN110676676B (en) | Pulse light source system and method for generating soliton explosion mode | |
| CN208862362U (en) | Controllable passive Q-adjusted green (light) laser | |
| CN216529822U (en) | 1.5-micrometer waveband picosecond Q-switched laser for ranging | |
| CN101882749A (en) | Pressurized modulate-Q electro-optical switch for laser | |
| CN2938489Y (en) | Pusewidth modutatable laser | |
| CN102946043B (en) | Electric light and optically-active thermal effect compensation complex function callium-lanthanum silicate crystal Q-switched laser | |
| CN102723661A (en) | Electro-optic Q-switching and acousto-optic Q-switching pulse laser capable of quickly converting Q-switching modes | |
| CN109119881B (en) | Electro-optical Q-switch trigger circuit and control method | |
| EP0354311A3 (en) | Direct generation of ultrafast electrical pulses | |
| Newbery | A method for producing controllable double pulses from a Q-switched laser | |
| CN219394814U (en) | Bidirectional thyristor zero-crossing trigger circuit | |
| Ishida et al. | Ultrafast self-phase modulation in a colliding pulse mode-locked ring dye laser | |
| Liu et al. | Dispersion independent mode-locked erbium-doped fiber laser with a chirped fiber Bragg grating | |
| CN105680315A (en) | Method for increasing average output power of electro-optic Q-switched laser | |
| GB1328725A (en) | Generator for producing very-high-voltage square-topped pulses | |
| CN203180304U (en) | Pulse laser | |
| Wu et al. | Comparative results of diode pumped Er: glass lasers Q-switched with BBO Pockel’s cell and FTIR methods | |
| Kerr | Filamentary Tracks Formed in Transparent Optical Glass by Laser-Beam Self-Focusing. III. Filament Formation | |
| CN106159666A (en) | A kind of new type electro Q-switch | |
| CN206774871U (en) | A kind of laser clipping device | |
| Minami et al. | Near-infrared subpicosecond pulse generation in a synchronously mode-locked cw dye laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |