共查询到20条相似文献,搜索用时 31 毫秒
1.
S. C. Huang H. L. Chang K. W. Su A. Li S. C. Liu Y. F. Chen K. F. Huang 《Applied physics. B, Lasers and optics》2009,94(3):483-487
An AlGaInAs quantum-well structure grown on a Fe-doped InP transparent substrate is developed to be a gain medium in a high-peak-power
nanosecond laser at 1570 nm. Using an actively Q-witched 1064 nm laser to pump the gain chip, an average output power of 135 mW
is generated at a pulse repetition rate of 30 kHz and an average pump power of 1.25 W. At a pulse repetition rate of 20 kHz,
the peak output power is up to 290 W at a peak pump power of 2.3 kW. 相似文献
2.
A. Yu. Nevsky U. Bressel I. Ernsting Ch. Eisele M. Okhapkin S. Schiller A. Gubenko D. Livshits S. Mikhrin I. Krestnikov A. Kovsh 《Applied physics. B, Lasers and optics》2008,92(4):501-507
We demonstrate a diode laser system which is suitable for high-resolution spectroscopy in the 1.2 μm and yellow spectral ranges.
It is based on a two-facet quantum dot chip in a Littrow-type external cavity configuration. The laser is tunable in the range
1125–1280 nm, with an output power of more than 200 mW, and exhibits a free-running line width of 200 kHz. Amplitude and frequency
noise were characterized, including the dependence of the frequency noise on the cavity length. Frequency stabilization to
a high-finesse reference cavity is demonstrated, whereby the line width was reduced to approx. 30 kHz. Using a femtosecond
frequency comb, the residual frequency instability was determined and found to be below 300 Hz on the time scales 1–300 s.
Yellow light (>3 mW) at 578 nm was generated by frequency doubling in an enhancement cavity containing a PPLN crystal. The
source has potential application for precision spectroscopy of ultra-cold Yb atoms and cold molecular hydrogen ions. 相似文献
3.
We reported an actively Q-switched, intracavity Nd3+:YVO4 self-Raman laser at 1176 nm with low threshold and high efficiency. From the extracavity frequency doubling by use of LBO nonlinear crystal, over 3.5 mW, 588 nm yellow laser is achieved. The maximum Raman laser output at is 182 mW with 1.8 W incident pump power. The threshold is only 370 mW at a pulse repetition frequency of 5 kHz. The optical conversion efficiency from incident to the Raman laser is 10%, and 1.9% from Raman laser to the yellow. 相似文献
4.
J.C. Diettrich I.T. McKinnie D.M. Warrington 《Applied physics. B, Lasers and optics》1999,69(3):203-206
We have developed a gain-switched room-temperature Cr:forsterite laser operating at repetition rates of between 1 and 34 kHz,
and pumped by a continuous wave, Q-switched Nd:YAG laser. With optimised output coupling, an output pulse energy of 52 μJ
was measured at 1.5 kHz repetition rate, corresponding to 11% efficiency and 13% slope efficiency. Threshold pulse energy
was 53 μJ. Output power of 370 mW was obtained at 10 kHz repetition rate and 4.4 W pump power. Water cooling was not required
for repetition rates up to 10 kHz. In a tunable, folded resonator, the Cr:forsterite wavelength tuned between 1173 and 1338 nm.
This laser operated with maximum pulse energy of 34 μJ, efficiency of 13%, and power of 307 mW. The laser output was close
to diffraction-limited with M2 of 1.2.
Received: 6 January 1999 / Published online: 29 July 1999 相似文献
5.
A passively Q-switched a-cut Nd:YVO4 self-stimulating Raman laser using a Cr:YAG saturable absorber has been demonstrated for the first time. The maximum average
output power of the self-Raman laser at 1176 nm is 347 mW at the incident pump power of 10 W with a pulse repetition frequency
(PRF) of 66 kHz. The pulse width, pulse energy of the 1176 nm are found to be 10 ns and 5.6 μJ. The conversion efficiency
from diode laser input power to Raman output power is 3.47%. 相似文献
6.
M. Uebernickel C. Fiebig G. Blume K. Paschke B. Eppich R. Güther G. Erbert 《Applied physics. B, Lasers and optics》2008,93(4):823-827
Continuous wave power of more than 400 mW at 488 nm has been generated by frequency doubling of 2.45 W at 976 nm obtained
from a distributed Bragg reflector tapered diode laser. This results in a wavelength conversion efficiency of 16.5% and an
electrical-to-optical efficiency of more than 4.5%. We used a 50 mm long periodically poled MgO:LiNbO3 bulk crystal in single-pass configuration for the second harmonic generation. This is to the author’s knowledge the highest
output power and the highest wavelength conversion efficiency at 488 nm generated by a monolithic semiconductor laser device
in single pass configuration with a bulk crystal. A deviation from the quadratic dependency of the frequency doubling is explained
by the decrease of the beam quality of the fundamental wave. 相似文献
7.
Intra-cavity sum frequency generation (SFG) of c-cut Nd:YVO4 self-Raman laser was investigated for the first time. A 4 × 4 × 10 mm3 KTP crystal with a type-II phase-matching cutting angle (θ = 83.4°, φ = 0°) was used for SFG between the fundamental light
at 1066 nm and first-Stokes light at 1178 nm. The laser system with different curvature radii of output couplers and different
pulse repetition frequencies were investigated. At a pump power of 14 W and pulse repetition frequency of 20 kHz, the average
output power of yellow-green laser at 560 nm up to 840 mW was achieved, corresponding to a slope efficiency of 7.6% and a
conversion efficiency of 6% with respect to diode pump power. 相似文献
8.
H. R. Chen J. H. Lin K. T. Song K. H. Lin W. F. Hsieh 《Applied physics. B, Lasers and optics》2009,96(1):19-23
We demonstrated a diode-pumped passively mode-locked c-cut Nd:LuVO4 picosecond laser with a semiconductor saturable-absorber mirror (SESAM) at a wavelength of 1067.8 nm. Due to the wide bandwidth
of 0.48 nm, stable mode-locking has been generated with a duration as short as 3.7 ps, which is shorter than for the a-cut
Nd:LuVO4 laser. A maximum output power of 1.67 W was achieved to give a highest peak power of 3.47 KW at 18 W absorbed pump power. 相似文献
9.
S. D. Pan X. Q. Yu Z. Yan Y. Shen X. J. Lv S. N. Zhu 《Applied physics. B, Lasers and optics》2008,93(4):749-752
We present an approach to generating a tunable orange laser from 0.601 to 0.604 μm based on a quasi-periodically poled superlattice
in LiTaO3 and a Q-switched 1.064 μm Nd:YVO4 laser as pump. The orange laser was generated in a cavity by a parametric process cascaded by a frequency mixing with a maximum
output of 310 mW using 15 W pump power. 相似文献
10.
We present the concept and practical realization of a single frequency, tuneable diode pumped Nd:YVO4/YVO4/KTP microchip laser operating at 532 nm. Theoretical analysis of the single mode operation of such a laser configuration
is presented. The single frequency operation has been obtained in a birefringent filter, where an YVO4 beam displacer acts as an ideal polarizer. Experimental results are in good agreement with theoretical analysis. We have
obtained stable single frequency operation, tuneable over 0.6 nm in the spectral range around 1064 nm. The laser operated
with output power up to 110 mW at 53 nm. The total optical efficiency (808 nm to 532 nm) was 14%. 相似文献
11.
By using a piece of single-walled carbon nanotube saturable absorber, the performance of the passively Q-switched composite
Nd:YVO4 laser has been demonstrated for the first time. The maximum average output power and the shortest pulse width are 1220 mW
and 103 ns at the incident pump power of 5.04 W for a 10% transmission of the output coupler. The highest pulse repetition
rate of 415.6 kHz and the largest single-pulse energy of 2.94 μJ are also obtained. The composite Nd:YVO4 crystal has more excellent laser performance than the normal Nd:YVO4 crystal at 1064 nm. 相似文献
12.
We have demonstrated a diode-pumped intra-cavity frequency doubling Nd:LuVO4 laser operating at 916 nm with a Z-folded cavity. A 10-mm long LBO crystal, cut for critical type I phase matching at 912 nm, is used for the experiment. A maximum output power of 330 mW at 458 nm has been achieved at pump power of 22 W. The optical-to-optical conversion efficiency and slope efficiency is 1.5% and 2.3%, respectively. The power instability at the maximum output power in 30 min is better than 3%. 相似文献
13.
A diode pumped Pr3+:LiYF4 laser at 639.5 nm has been demonstrated. With an incident pump power of 920 mW, the maximum red output power was 272 mW.
Moreover, intracavity second-harmonic generation (SHG) has also been achieved with a maximum ultraviolet power of 23 mW by
using a β-BaB2O4 (BBO) nonlinear crystal. To the best of our knowledge, this is the first report on continuous-wave ultraviolet generation
by intracavity frequency doubling Pr3+:LiYF4 laser. 相似文献
14.
We have demonstrated an efficient diode-pumped passively Q-switched Nd:GdVO4 laser working at 1342 nm by using an uncoated V3+:YAG crystal as the saturable absorber, in which both a-cut and c-cut Nd:GdVO4 crystals are employed. At the maximum absorbed pump power of 9.45 W, the maximum average output power can reach 519 mW and 441 mW corresponding to the output coupler with different transmission of 3% and 10% by using an a-cut Nd:GdVO4 crystal at 1342 nm, while the shortest pulse duration could be as low as 21.7 ns and 22.3 ns with the repetition rate of 48.41 kHz and 53.25 kHz by using a c-cut Nd:GdVO4 crystal, corresponding to the output coupler with different transmission of 3% and 10% at 1342 nm, and the single Q-switched pulse energy are 6.67 uJ and 7.06 uJ, the pulse peak power are 307 W and 316 W, respectively. The experimental results show that c-cut Nd:GdVO4 laser can generate shorter pulse with higher peak power in comparison with a-cut one. 相似文献
15.
By simple extra-cavity frequency conversion, the performance of a diode single-end-pumped AO Q-switched Nd:GdVO4/KTP/BBO 266 nm laser was demonstrated. Under the incident pump power of 14.32 W, the maximum average output power at 266
nm was 374 mW at the repetition of 20 kHz; the opticaloptical conversion efficiency was 2.6%. The corresponding pulse width
was 5 ns, with the single-pulse energy and peak power calculated to be 18.7 μJ and 3.74 kW, respectively. The dependence of
the operational parameters on the pump power was also investigated experimentally. 相似文献
16.
We report, for the first time, an efficient intra-cavity second-harmonic generation (SHG) at 1084 nm in a nonlinear optical crystal, BiB3O6(BIBO) at the direction of (θ, ?) = (170.1°, 90°), performed with a LD end-pumped cw Nd:YVO4 laser. With 590 mW diode pump power, a continuous-wave (cw) SHG output power of 19 mW at 542 nm yellow-green color has been obtained using a 1.5 mm-thick BIBO crystal. The optical conversion efficiency was 3.22%. It was found that the output wavelength could be 532 nm, 537 nm or 542 nm according to regulating the angle of BIBO. 相似文献
17.
A compact low-threshold Raman laser at 1178 nm is experimentally realized by using a diode-end-pumped actively Q-switched Nd^3+ :YVO4 self-Raman laser. The threshold is 370mW at a pulse repetition frequency of S kHz. The maximum Raman laser output is 182 m W with the pulse duration smaller than 20 ns at a pulse repetition frequency of 30kHz with 1.8 W incident power. The optical efficiency from the incident power to the Raman laser is 10% and the slope efficiency is 13.5%. 相似文献
18.
Continuous-wave tunable Cr2+:ZnS laser 总被引:1,自引:0,他引:1
I.T. Sorokina E. Sorokin S. Mirov V. Fedorov V. Badikov V. Panyutin A. Di Lieto M. Tonelli 《Applied physics. B, Lasers and optics》2002,74(6):607-611
We report the first continuous-wave tunable over ∼280 nm around 2.3 μm room-temperature operation of a chemical vapor transport-grown
and diffusion-doped Cr2+:ZnS laser, pumped by a Co:MgF2 laser at 1.67 μm and generating over 100 mW of output power at 16% slope efficiency. The self-consistent results of the laser
and spectroscopic analysis demonstrate a large potential of this crystal as an active medium for diode-pumped tunable mid-infrared
sources.
Received: 7 January 2002 / Revised: 14 March 2002 / Published online: 2 May 2002 相似文献
19.
M. S. Gaponenko I. A. Denisov V. E. Kisel A. M. Malyarevich A. A. Zhilin A. A. Onushchenko N. V. Kuleshov K. V. Yumashev 《Applied physics. B, Lasers and optics》2008,93(4):787-791
Glass doped with PbS quantum dots is presented as a saturable absorber (SA) for a passive Q-switching of a diode-pumped 1.9 μm Tm:KYW laser. Output pulses with energy of 44 μJ at a repetition rate of 2.5 kHz with
an average output power of 110 mW were obtained. The Q-switching conversion efficiency was 33%. The absorption saturation intensity of the glass doped with PbS quantum dots with
a mean radius of 5.2 nm at a wavelength of 2 μm was measured to be 1.5 MW/cm2. 相似文献
20.
We demonstrate a passively Q-switched Nd:LuVO4 laser at 916 nm by using a Nd, Cr:YAG crystal as the saturable absorber. As we know, it is the first time to realize the laser with a simple linear resonator. When the incident pump power increased from 14.6 W to 23.7 W, the pulse width of the Q-switched laser decreased from 24 ns to 21 ns. The pulse width was insensitive to the incident pump power in the experiment. The average output power of 288 mW with repetition rate of 39 kHz was obtained at an incident pump power of 22.5 W, with the optical-to-optical efficiency and slope efficiency 1.3% and 3.6%, respectively. 相似文献