CN2638295Y - Belt shaped microchip automatic regulating Q double wrapping optical fibre amplifier - Google Patents
Belt shaped microchip automatic regulating Q double wrapping optical fibre amplifier Download PDFInfo
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- CN2638295Y CN2638295Y CN 03256077 CN03256077U CN2638295Y CN 2638295 Y CN2638295 Y CN 2638295Y CN 03256077 CN03256077 CN 03256077 CN 03256077 U CN03256077 U CN 03256077U CN 2638295 Y CN2638295 Y CN 2638295Y
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- microplate
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Abstract
A zonary microchip self-Q-switched double-clad fiber amplifier comprises a laser diode with tail fiber and a collimating focusing lens system and a microchip crystal in sequence along the direction of beam. The utility model is characterized in that the microchip crystal is a double doped microchip crystal with two coating ends, and a faraday isolator, a focusing lens with short focal length and a double-clad fiber are arranged behind the double doped microchip crystal, and a V-shaped slot-coupled system is positioned on the double-clad fiber. The relations of the various parts are that: the ray emitted by the laser diode with the tail fiber irradiates on the double doped microchip crystal with two coating ends through the collimating focusing lens system, producing self-Q-switched pulsed laser which enters the faraday isolator, and then enters a fiber core through the focusing lens with short focal length, and the V-shaped slot-coupled system leads pumping light to be coupled into an inner clad of the double-clad fiber. The utility model has the advantages of simple structure, small volume, narrow pulse width, large output power, and high repetition rate, etc.
Description
Technical field
The utility model relates to the high power pulse fiber amplifier, particularly a kind of banded microplate self-regulated Q double-cladding fiber amplifier.
Technical background
The doubly clad optical fiber of doped with rare-earth elements has brought revolutionary variation for the lightwave technology field.Double-clad optical fiber laser is because its special waveguiding structure is subjected to people's favor day by day.Also developing of traditional LD pumping semiconductor laser towards both direction, the one, obtain high power output; Another is to make laser structure compact more, replaces strip type, excellent type structure with micro sheet structure.(" the high power laser diode pumped all-solid-state Nd:YVO that delivers referring to people such as Li Jian
4Micro-slice laser " " photoelectron laser " the 10th volume, the 5th phase, 1999.10).
Summary of the invention
The purpose of this utility model is to provide a kind of banded microplate self-regulated Q double-cladding fiber amplifier, and that this device should have is simple in structure, volume is little, pulse duration is little, power output is big and characteristics such as repetition rate height.
Technical solution of the present utility model is as follows:
A kind of banded microplate self-regulated Q double-cladding fiber amplifier, the direction of advancing along light beam comprises pigtailed laser diode successively, collimation focus lens system and microplate crystal, it is characterized in that this microplate crystal is the codope microplate crystal of a two ends plated film, also has faraday isolator thereafter, short focal length focusing len, doubly clad optical fiber, on this doubly clad optical fiber, be installed on the V-shaped groove coupled system, the relation of each part mentioned above is: the light that pigtailed laser diode sends is radiated on the two ends plated film codope microplate crystal through the collimation focusing system, produce self-regulated Q pulse laser, enter faraday isolator, enter in the fibre core through short focal length lens then, the V-shaped groove coupled system makes the inner cladding of pump light coupled into double-clad fiber.
The pump light wavelength of described pigtailed laser diode should be complementary with the absorbing wavelength of doped dielectric in the codope microplate crystal.
The codope crystal of described two ends plated film, front surface plating to pump light high saturating, to the high anti-deielectric-coating of seed pulse laser, be used for directly doing the front cavity mirror of resonant cavity, the rear surface plating to the high anti-transmission film of seed laser as outgoing mirror.
Be mixed with rare earth ion in the fibre core of described doubly clad optical fiber, front end face is an even surface, and rear end face has 8 ° inclination angle.
Described V-shaped groove coupled system is made up of V-shaped groove side, transparent substrates, micro lens group, pumping LD etc.
A plurality of V-shaped groove coupled systems can be set on the described fiber lengths.
Description of drawings
Fig. 1 is the principle assumption diagram of the banded microplate self-regulated of the utility model Q double-cladding fiber amplifier.
Embodiment:
Please see Figure 1, a kind of banded microplate self-regulated Q double-cladding fiber amplifier, comprise successively: pigtailed laser diode 1, collimation focus lens system 2, the codope microplate crystal 3 of two ends plated film, faraday isolator 4, short focal length focusing len 5, doubly clad optical fiber surrounding layer 6, doubly clad optical fiber inner cladding 7, doubly clad optical fiber fibre core 8, V-shaped groove coupled system 13, the relation of each several part is that the light that pigtailed laser diode 1 sends is radiated on the codope microplate crystal 3 through collimation focusing system 2, produce self-regulated Q pulse laser, enter faraday isolator 4, pass through short focal length lens 5 then, make the numerical aperture of pulse laser satisfy the requirement of doubly clad optical fiber fibre core, enter in the fibre core.V-shaped groove coupled system 13 makes pump light coupled into double-clad fiber inner cladding 7, when light beam is propagated in inner cladding, constantly pass through doubly clad optical fiber fibre core 8 and be absorbed, dopant ion in the fibre core produces population inversion, thereby the seed pulse in the fibre core is played amplification, produce high-power amplification output.
Lift a specific embodiment below and further specify the utility model.
Adopting peak power output is the pigtailed laser diode 1 of 4W, and output wavelength is 808nm, and crystal 3 is the Cr of Φ 6mm * 1mm
4+, Nd
3+: the YAG microplate, front surface at crystal has plated to 808nm anti-reflection (T＞96%), the deielectric-coating of the high reflection of 1064nm (R＞99.8%), be used for the front cavity mirror of resonant cavity, the another side of crystal 3 has plated transmission film to the high reflection of 1064nm (R=92%) as outgoing mirror, doubly clad optical fiber length is 12m, and Yb mixes in the fibre core
3+Inner cladding 7 is of a size of 100 * 200um (NA=0.47), core diameter is 10um (NA=0.08), the wavelength of pump laser diode is 975nm, the degree of depth of V-shaped groove 9 is 40um, and width is 200um, experimental results show that the coupling efficiency of V-shaped groove can reach more than 70%, along with the increase of pump power, the power output of amplifier is also increasing.
Through probationary certificate, the utlity model has simple in structure, volume is little, pulse duration is little, power output is big and characteristics such as repetition rate height.
Claims (6)
1, a kind of banded microplate self-regulated Q double-cladding fiber amplifier, the direction of advancing along light beam comprises pigtailed laser diode (1) successively, collimation focus lens system (2) and microplate crystal (3), it is characterized in that the codope microplate crystal (3) that this microplate crystal (3) is a two ends plated film, also has faraday isolator (4) thereafter, short focal length focusing len (5), doubly clad optical fiber (6), on this doubly clad optical fiber (6), be installed on V-shaped groove coupled system (13), the relation of each part mentioned above is that the light that pigtailed laser diode (1) sends is radiated on the two ends plated film codope microplate crystal (3) through collimation focusing system (2), produce self-regulated Q pulse laser, enter faraday isolator (4), pass through short focal length lens (5) then, enter in the fibre core, V-shaped groove coupled system (13) makes the inner cladding (7) of pump light coupled into double-clad fiber (6).
2,, it is characterized in that the pump light wavelength of described pigtailed laser diode (1) should be complementary with the absorbing wavelength of doped dielectric in the codope microplate crystal (3) according to the described banded microplate self-regulated Q double-cladding fiber amplifier of claim 1.
3, according to the described banded microplate self-regulated Q double-cladding fiber amplifier of claim 1, the codope crystal (3) that it is characterized in that described two ends plated film, front surface plating to pump light high saturating, to the high anti-deielectric-coating of seed pulse laser, be used for directly doing the front cavity mirror of resonant cavity, the rear surface plating to the high anti-transmission film of seed laser as outgoing mirror.
4, banded microplate self-regulated Q double-cladding fiber amplifier according to claim 1 is characterized in that being mixed with rare earth ion in the fibre core (8) of described doubly clad optical fiber, and front end face is an even surface, and rear end face has 8 ° inclination angle.
5, banded microplate self-regulated Q double-cladding fiber amplifier according to claim 1 is characterized in that described V-shaped groove coupled system (13) is made up of V-shaped groove side (9), transparent substrates (10), micro lens group (11), pumping LD (12) etc.
6, banded microplate self-regulated Q double-cladding fiber amplifier according to claim 1 is characterized in that on described optical fiber (6) length a plurality of V-shaped groove coupled systems (13) being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03256077 CN2638295Y (en) | 2003-07-29 | 2003-07-29 | Belt shaped microchip automatic regulating Q double wrapping optical fibre amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03256077 CN2638295Y (en) | 2003-07-29 | 2003-07-29 | Belt shaped microchip automatic regulating Q double wrapping optical fibre amplifier |
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| Publication Number | Publication Date |
|---|---|
| CN2638295Y true CN2638295Y (en) | 2004-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03256077 Expired - Fee Related CN2638295Y (en) | 2003-07-29 | 2003-07-29 | Belt shaped microchip automatic regulating Q double wrapping optical fibre amplifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006099805A1 (en) * | 2005-03-25 | 2006-09-28 | Tsinghua University | Acoustic optical q-modulating method for double-clad fiber laser and apparatus |
-
2003
- 2003-07-29 CN CN 03256077 patent/CN2638295Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006099805A1 (en) * | 2005-03-25 | 2006-09-28 | Tsinghua University | Acoustic optical q-modulating method for double-clad fiber laser and apparatus |
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Legal Events
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|---|---|---|---|
| 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 |