Frequency tripling of a Q-switched Cr:LiSAF laser to the UV region

Pinto, Joseph F.; Esterowitz, L.; Rosenblatt, Gregg H.

doi:10.1109/2944.468371

Cited by 22 publications

(20 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the intracavity cw blue generation experiments with Cr:LiSAF, cw blue powers up to 32 mW at 430 nm have been reached from a Cr:LiSAF laser pumped by a 1 W diode [28]. Moreover, cw blue tuning ranges from 428 to 444 nm [26] and q-switched blue tuning ranges from 390 to 480 nm [16] have been achieved. Tunable ultraviolet from 260 to 320 nm has also been attained via a third-harmonic generation process using a Q-switched Cr:LiSAF laser pumped by flashlights [16].…”

Section: Introductionmentioning

confidence: 98%

“…Cr 3 : Colquiriites of the general formula Li Me II Me III F 6 (Me II Ca, Sr, Cd; Me III Al, Ga, Ti, V, Cr, Fe) (e.g., Cr:LiSAF [9], Cr:LiCAF [10], Cr:LiSGaF [11], Cr:LiSCAF [12] and LiSrCrF 6 (LiChrom) [13]) have been attracting a great deal of attention as an important and versatile solid-state laser gain media since late 80 s. This attention is not gratuitous, since Cr:Colquiriites have several favorable laser characteristics including: (i) strong and broad absorption bands around 630 nm enabling wavelength and polarization flexible direct diode pumping by low-cost diodes [14,15], (ii) broad gain bandwidths around 800 nm providing total tunability from 720 to 1110 nm [10,[16][17][18] and enabling generation of pulses on a 10 fs level [19][20][21], (iii) near-unity quantum efficiency to allow construction of quite efficient lasers. Hence, Cr:Colquiriites are the leading candidate for developing low-cost and compact tunable and femtosecond laser systems in the near infrared (720-1110 nm) and ultraviolet-blue-visible spectral regions (360-555 nm) [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…Earlier experiments of blue generation with Cr:Colquiriites have been focused on Cr:LiSAF and intracavity blue generation from continuous wave (cw) [25][26][27][28] and q-switched [16,29,30] sources as well as extra cavity femtosecond blue generation have been demonstrated [31][32][33]. In the intracavity cw blue generation experiments with Cr:LiSAF, cw blue powers up to 32 mW at 430 nm have been reached from a Cr:LiSAF laser pumped by a 1 W diode [28].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low-cost, broadly tunable (375–433 nm & 746–887 nm) Cr:LiCAF laser pumped by one single-spatial-mode diode

et al. 2012

View full text Add to dashboard Cite

We describe a low-cost, compact, and efficient Cr(3+):LiCaAlF(6) (Cr:LiCAF) laser that is broadly tunable in the near infrared (746-887 nm) and blue/ultraviolet (375-433 nm) regions of the optical spectrum. The pump source is a 660 nm single-mode-diode with 145 mW of output power. A melt-grown Cr:LiCAF crystal with an extremely high figure of merit above 2000 was used as the gain medium. This enabled the construction of a high-Q-cavity with continuous wave (cw) lasing thresholds as low as 3 mW, slope efficiencies as high as 54%, and output powers up to 63 mW. The stored intracavity power levels were above 30 W. By placing a beta-barium-borate crystal at a second intracavity focus, we could obtain tunable cw blue/ultraviolet radiation with output powers up to 3.5 mW around 400 nm. When mode-locked using a saturable Bragg reflector around 800 nm, the Cr:LiCAF laser produced 95 fs pulses with average powers of 33 mW and peak powers of 3.58 kW at a repetition rate of 85.5 MHz. Extracavity second harmonic generation enables generation of femtosecond pulses around 400 nm. These results demonstrate the possibility to grow Cr:LiCAF crystals with passive losses below 0.15% per cm, which enables construction of low-cost and complexity systems that are pumped only with one low-power single-mode-diode.

show abstract

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Low-cost, broadly tunable (375–433 nm & 746–887 nm) Cr:LiCAF laser pumped by one single-spatial-mode diode

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Besides enabling a significant reduction in cost, direct pumping with high-brightness diodes also greatly improves electrical-to-optical conversion efficiency. Among the Cr:colquiriites, Cr:LiSAF has the broadest gain and its demonstrated continuous-wave (cw) tuning range extends from 775 to 1042 nm [18] (extending to 1065 nm in pulsed operation [21]). Cr:LiCAF has received attention due to its blueshifted emission spectrum, which enables a cw tuning range of 754-871 nm [18] (extending to 720 nm in quasi-cw operation [4]).…”

Section: Introductionmentioning

confidence: 99%

Femtosecond tuning of Cr:colquiriite lasers with AlGaAs-based saturable Bragg reflectors

Demırbas

Petrich

et al. 2011

J. Opt. Soc. Am. B

View full text Add to dashboard Cite

We present a detailed experimental study of femtosecond tuning with Cr:LiSAF and Cr:LiCAF gain media using Al 0:95 Ga 0:05 As=Al 0:17 Ga 0:83 As-based saturable Bragg reflectors. In the experiments with Cr:LiSAF gain media, femtosecond tuning ranges of 803-831 nm (28 nm), 828-873 nm (45 nm) and 890-923 nm (33 nm) were demonstrated using three different saturable Bragg reflectors with reflectivity bands centered at around 800, 850, and 910 nm, respectively. With Cr:LiCAF gain medium, a femtosecond tuning range of 767-817 nm (50 nm) was demonstrated using the 800 nm saturable Bragg reflector. Pulses as short as 26 fs with Cr:LiSAF and 39 fs with Cr:LiCAF have been obtained, which we believe are the shortest pulses reported from Cr:colquiriite laser systems mode locked with saturable Bragg reflectors. This study further illustrates the benefits and limitations of Al 0:95 Ga 0:05 As=Al 0:17 Ga 0:83 As-based saturable Bragg reflectors for use in Cr:colquiriites.

show abstract

“…The combination of extremely broad bandwidths and high parametric gain [16] affordable in PPMg:SLT makes this material a promising candidate for applications to high-power, ultrashort pulse generation and amplification Given the optimum pump wavelength of 860 nm, it is interesting to consider broadband parametric systems pumped by Cr:LiSAF lasers and amplifiers, which can be directly diode pumped and can also generate large pulse energies at this wavelength [22].…”

Section: Resultsmentioning

confidence: 99%

Ultra-broadband optical parametric generation in periodically poled stoichiometric LiTaO_3

Levenius¹,

Pasiskevicius²,

Laurell³

et al. 2011

Opt. Express

View full text Add to dashboard Cite

Abstract:We report on broadband gain in an optical parametric generator based on periodically poled 1 mol% magnesium-doped stoichiometric LiTaO 3 (PPMg:SLT). More than an octave-spanning parametric gain, stretching from near to mid-infrared, is generated by pumping the crystals close to the point where, at parametric degeneracy, the waves experience zero group-velocity dispersion. Using a picosecond Ti:sapphire source, we measured the broadest parametric gain bandwidths, 180 THz at 10 dB, in PPMg:SLT gratings with a period of 25 µm pumped at 860 nm.

show abstract

Frequency tripling of a Q-switched Cr:LiSAF laser to the UV region

Cited by 22 publications

References 16 publications

Low-cost, broadly tunable (375–433 nm & 746–887 nm) Cr:LiCAF laser pumped by one single-spatial-mode diode

Low-cost, broadly tunable (375–433 nm & 746–887 nm) Cr:LiCAF laser pumped by one single-spatial-mode diode

Femtosecond tuning of Cr:colquiriite lasers with AlGaAs-based saturable Bragg reflectors

Ultra-broadband optical parametric generation in periodically poled stoichiometric LiTaO_3

Contact Info

Product

Resources

About