Feasibility study of optically pumped molecular lasers with small quantum defect

Ratanavis, Amarin; Campbell, Neil; Rudolph, Wolfgang

doi:10.1016/j.optcom.2009.10.120

Cited by 8 publications

(3 citation statements)

References 25 publications

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“…The addition of buffer gases may speed rotational mixing of the excited state population, remove population from unwanted vibrational states, and accelerate heat dissipation. Furthermore, extremely efficient molecular CW lasers with very small quantum defects [27] similar to alkali vapor lasers seem feasible with PCFs.…”

Section: Discussionmentioning

confidence: 99%

Mid-infrared gas filled photonic crystal fiber laser based on population inversion

Jones¹,

Nampoothiri²,

Ratanavis³

et al. 2011

Opt. Express

101

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We demonstrate for the first time an optically pumped gas laser based on population inversion using a hollow core photonic crystal fiber (HC-PCF). The HC-PCF filled with 12C2H2 gas is pumped with ~5 ns pulses at 1.52 μm and lases at 3.12 μm and 3.16 μm in the mid-infrared spectral region. The maximum measured laser pulse energy of ~6 nJ was obtained at a gas pressure of 7 torr with a fiber with 20 dB/m loss near the lasing wavelengths. While the measured slope efficiencies of this prototype did not exceed a few percent due mainly to linear losses of the fiber at the laser wavelengths, 25% slope efficiency and pulse energies of a few mJ are the predicted limits of this laser. Simulations of the laser's behavior agree qualitatively with experimental observations.

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Section: Discussionmentioning

confidence: 99%

Mid-infrared gas filled photonic crystal fiber laser based on population inversion

Jones¹,

Nampoothiri²,

Ratanavis³

et al. 2011

Opt. Express

101

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“…While the present HOGLASs operate in pulsed mode, cw operation seems possible with the right combination of active gas and pump laser. One concept involves lasing of HCN with small Stokes shift when pumped with a C-band source [57]. Another possibility is I 2 pumped at 532 nm, which has produced lasing using conventional gas cells three decades ago [35].…”

Section: Discussionmentioning

confidence: 99%

Hollow-core Optical Fiber Gas Lasers (HOFGLAS): a review [Invited]

Nampoothiri¹,

Jones²,

Fourcade-Dutin³

et al. 2012

Opt. Mater. Express

110

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International audienceThe development of hollow core photonic crystal fibers with low losses over a broad spectral region in the near IR enabled the demonstration of a novel laser type - Hollow-core Optical Fiber Gas Laser (HOFGLAS). The laser combines attractive features of fiber lasers such as compactness and long interaction length of pump and laser radiation with those of gas lasers such as the potential for high output power and narrow line width. This paper summarizes recent developments and describes the demonstration of C2H2 and HCN prototype lasers. Avenues to extend laser emission further into the IR are discussed

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Section: Discussionmentioning

confidence: 99%

Molecular Gas-Filled Hollow Optical Fiber Lasers in the Near Infrared

Washburn¹,

Corwin²

2012

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The public reportmg burd en for th1s collection of mform ation is estimated to average 1 hour per response. includmg the tim e for rev>ewing instruct>ons. searclhing exi sting data so urces. gathering and mmnta1mng the data needed . and co mpleting and rev1ew 1 ng the collection of 1nforma t1 on. Send co mments regarding th1s burden est1m ate or any other aspect o fth1s collection of mformat1on . 1nclud1 ng suggesti ons for reduc1 ng the burden. to the Department of De fense. ExecutiV e Serv1ce D>rectorate (0704 -0 188) Respo ndents should be aware that notwithstanding any other prov1 s1 on of law. no person shall be sub;ect to any penalty for falling to comply w1th a collect> on of 1 nform at1on if 1 t does not display a currently v alid OMB co ntrol number PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ORGANIZATION. 1. REPORT DATE (DD-MM-YYYY)12. REPORT TYPE 3. DATES COVERED (From-To) PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION Kansas State University REPORT NUMBERPre-award services, 2 Fairchild Hall Manhattan, KS 66506 SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR'S ACRONYM(S)Air Force Office of Scientific Research AFOSR 875N. Randolph St. Room 3112 Arlington VA 22204 SPONSOR/MONITOR'S REPORT NUMBER(S)AFRL-OSR-VA-TR-20 12-0270 DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release SUPPLEMENTARY NOTES ABSTRACTWe have demonstrated of a new class of optically pumped gas lasers inside a hollow-core photonic crystal fibers. Here, a molecular gas is confined to a hollow-core photonic crystal fiber whose transmission spans several octaves to reach the mid-infrared spectral region. The gas is pumped in the near-infrared (~1.5 IJIII) and the laser produces mid-infrared light (~3 IJIII) offering a potentially robust, efficient, and compact means of producing step-tunable eye-safe mid-infrared radiation well suited to a multitude of applications. During the course of the grant we have demonstrated for the first time mid-infrared lasing in both an acetylene and hydrogen cyanide filled kagome structured hollow-core photonic crystal fiber. These lasers are the first in a new class of infrared lasers based on the combination of hollow-fiber and optically pumped-gas technologies. 1S. SUBJECT TERMS A. IntroductionThis report summarizes the major accomplishment of AFOSR DEPSCoR grant number FA9550-08-1-0344 from June 1, 2008 to May 31, 2011 at Kansas State University (K-State). The goal of the project was to demonstrate a proof-of-principle gas-filled hollow core photonic crystal fiber (HC-PCF). During this grant period we accomplished our goal by demonstrating for the first time mid-IR lasing in both an acetylene ( 12 C 2 H 2 ) and hydrogen cyanide (H 12 CN) filled kagome structured HC-PCFs. These lasers are the first in a new class of IR lasers based on the combination of hollow-fiber and optically pumped-gas technologies.A portion of this work was jointly funded by an Army Research Office STTR grant A08A-021-0152. Precision Photonics Corporation (PPC)...

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Feasibility study of optically pumped molecular lasers with small quantum defect

Cited by 8 publications

References 25 publications

Mid-infrared gas filled photonic crystal fiber laser based on population inversion

Mid-infrared gas filled photonic crystal fiber laser based on population inversion

Hollow-core Optical Fiber Gas Lasers (HOFGLAS): a review [Invited]

Molecular Gas-Filled Hollow Optical Fiber Lasers in the Near Infrared

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