Operation of a single mode external-cavity laser diode array near 780 nm

Bayram, Servet; Chupp, T. E.

doi:10.1063/1.1516848

Cited by 23 publications

(11 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We used two Coherent Inc. S-780-2000C-150-C 2 W cw single-stripe BALs, whose dimensions are 150 m ϫ 1 m ϫ 1000 m, in our ECDL. Similar lasers have been used in other ECDL designs [26,29]. One of the two lasers was antireflection (AR) coated to suppress internal oscillations.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Characteristics of a high-power broad-area laser operating in a passively stabilized external cavity

Sands

Bayram

2007

Appl. Opt.

View full text Add to dashboard Cite

We narrowed the spectral bandwidth of our 2 W broad-area laser to 8+/-1 GHz with a coarse tunability of 12 nm centered near 790 nm in an external cavity. Our passively stabilized external cavity was designed for use with high-power semiconductor lasers. The cavity length and mount are modular with a fixed pivot point so that the optical elements can be changed to access a broad frequency spectrum and enable multiple applications. The bandwidth was observed to be dependent on the multimode transverse structure of the laser.

show abstract

Section: Methodsmentioning

confidence: 99%

“…One of the two lasers was antireflection (AR) coated to suppress internal oscillations. The process of applying the single-layer AR coating was previously reported [29]. Each BAL was thermoelectrically cooled and powered by an MPL-2500 laser diode driver from Wavelength Electronics.…”

Section: Methodsmentioning

confidence: 99%

Characteristics of a high-power broad-area laser operating in a passively stabilized external cavity

Sands

Bayram

2007

Appl. Opt.

View full text Add to dashboard Cite

show abstract

“…We were able to achieve operation on a single dominant longitudinal mode for output powers of Յ10 W, which is roughly an order of magnitude increase in power from previous results. 10 The external cavity used with the BAL is in a LittmanMetcalf configuration as shown in Fig. 1.…”

mentioning

confidence: 99%

Frequency narrowing of a 25 W broad area diode laser

Sell

Miller

Wright

et al. 2009

Applied Physics Letters

View full text Add to dashboard Cite

We report on the spectral narrowing of a high powered (25 W) broad area diode laser using an external cavity with a holographic diffraction grating. In a Littman–Metcalf configuration, the external cavity is able to reduce the linewidth of the diode laser to primarily a single longitudinal mode (1.8 MHz) for output powers of ≤10 W at 852 nm. Many physics applications could benefit from such high powered, narrow linewidth lasers; however both the frequency stability and the spatial profile of the output beam show room for improvement.

show abstract

“…One possible approach to solving the above problem consists in the use of an external resonator in which the spectrally selective element can be based on an interference filter [2], a diffraction grating [3][4][5], etc. A simple and effective design of the external resonator is offered by a cavity with external grating that operates in the Littrow scheme, according to which a grating and an unbloomed output face of the LD form a spectrally selective laser cavity.…”

mentioning

confidence: 99%

10.1007/s11455-008-3003-5

2010

CrossRef Listing of Deleted DOIs

View full text Add to dashboard Cite

The output radiation power of modern laser diodes (LDs) operating in the continuous-wave (CW) generation regime reaches 10 W and above [1], which makes them promising sources for nonlinear optical converters for the yellow-green spectral range. However, a significant disadvantage of high-power edgeemitting LDs with wide stripe contacts is the operation in a multimode and multifrequency regime, which is related to the uncontrolled generation of numerous longitudinal and transverse modes in the p − n junction plane and accounts for a relatively large width of the radiation spectrum (linewidth). At the same time, the spectral bandwidth of conversion in modern nonlinear crystals-for example, that based on periodically poled lithium niobate (PPLN)-does not exceed 0.3 nm. Therefore, it is an urgent task to create a high-power edge-emitting laser that possesses a narrow linewidth.One possible approach to solving the above problem consists in the use of an external resonator in which the spectrally selective element can be based on an interference filter [2], a diffraction grating [3-5], etc. A simple and effective design of the external resonator is offered by a cavity with external grating that operates in the Littrow scheme, according to which a grating and an unbloomed output face of the LD form a spectrally selective laser cavity. The angle of diffraction for the selected wavelength λ is equal to the angle β of radiation incidence on the grating (Fig. 1), so that where d is the grating period. λ 2d β, sin = Abstract -Use of an external cavity with a grating ensures effective narrowing of the linewidth (~0.35 nm) of a high-power multimode semiconductor laser with a broad (100 µ m) stripe contact. An output power of up to 550 mW has been reached with experimental external-grating-cavity laser diodes. It is demonstrated that a 3-mm-long multimode laser diode based on a quantum-dimensional AlGaAs/GaAs/InGaAs heterostructure ( λ = 1.06 µ m) can be used with a directly pumped PPLN crystal waveguide to obtain second-harmonic radiation with λ = 0.532 µ m. PACS numbers: 42.55.Px First diffraction order First diffraction order First diffraction order β β β β β β Cylindrical microlens Microobjective R ഛ 0.05 LD R = 0.95 L = 25 cm Diffraction grating (1/1200) Output beam, zero diffraction orderFig. 1. Schematic diagram of an external-cavity LD ( R is the coefficient of reflection).

show abstract

Operation of a single mode external-cavity laser diode array near 780 nm

Abstract: We have narrowed the spectral bandwidth of a commercial 2 W laser diode array to be less than 120 MHz near 780 nm. The external-cavity laser diode array system is a standard double-pass Littman-Metcalf configuration operating on a dominant single longitudinal mode.

Cited by 23 publications

References 9 publications

Characteristics of a high-power broad-area laser operating in a passively stabilized external cavity

Characteristics of a high-power broad-area laser operating in a passively stabilized external cavity

Frequency narrowing of a 25 W broad area diode laser

10.1007/s11455-008-3003-5

Contact Info

Product

Resources

About