| Alternative title | Control of N2+ air lasing |
|---|
| Download | - View final version: Control of N₂⁺ air lasing (PDF, 2.1 MiB)
|
|---|
| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevA.102.053110 |
|---|
| Author | Search for: Britton, MathewORCID identifier: https://orcid.org/0000-0001-8309-8290; Search for: Lytova, Marianna; Search for: Ko, Dong HyukORCID identifier: https://orcid.org/0000-0002-7840-9995; Search for: Alqasem, Abdulaziz; Search for: Peng, PengORCID identifier: https://orcid.org/0000-0002-0165-4984; Search for: Villeneuve, D. M.1; Search for: Zhang, Chunmei; Search for: Arissian, Ladan1; Search for: Corkum, P. B. |
|---|
| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
|
|---|
| Format | Text, Article |
|---|
| Abstract | A near-infrared laser generates gain on transitions between the B²Σ₉⁺ and X²Σ₉⁺ states of the nitrogen molecular cation in part by coupling the X²Σ₉⁺ and A²IIᵤ states in the V system. Traditional time resolved pump-probe measurements rely on postionization coupling by the pump pulse to initialize dynamics in the A²IIᵤ state. Here we show that a weak second excitation pulse reduces ambiguity because it acts only on the ion independent of ionization. The additional control pulse can increase gain by moving population to the A²IIᵤ state, which modifies the lasing emission in two distinct ways. The presence of fast decoherence on X²Σ₉⁺ to A²IIᵤ transitions may prevent the formation of a coherent rotational wave packet in the ground state in our experiment, but the control pulse can reverse impulsive alignment by the pump pulse to remove rotational wave packets in the B²Σᵤ⁺ state. |
|---|
| Publication date | 2020-11-13 |
|---|
| Publisher | American Physical Society |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 88034075-f515-4e7d-aa00-595d1ce2ce99 |
|---|
| Record created | 2021-05-11 |
|---|
| Record modified | 2021-05-12 |
|---|
